1422124440 has 128 divisors (see below), whose sum is σ = 4700747520. Its totient is φ = 341312000.

The previous prime is 1422124397. The next prime is 1422124447. The reversal of 1422124440 is 444212241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1422124440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422124447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127987 + ... + 138653.

It is an arithmetic number, because the mean of its divisors is an integer number (36724590).

Almost surely, 2^1422124440 is an apocalyptic number.

1422124440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422124440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2350373760).

1422124440 is an abundant number, since it is smaller than the sum of its proper divisors (3278623080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1422124440 is a wasteful number, since it uses less digits than its factorization.

1422124440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793 (or 10789 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1422124440 is about 37711.0652196408. The cubic root of 1422124440 is about 1124.5511137532.

Adding to 1422124440 its reverse (444212241), we get a palindrome (1866336681).

The spelling of 1422124440 in words is "one billion, four hundred twenty-two million, one hundred twenty-four thousand, four hundred forty".