1244140 has 12 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 497648.

The previous prime is 1244099. The next prime is 1244141. The reversal of 1244140 is 414421.

1244140 is nontrivially palindromic in base 8.

It is not an unprimeable number, because it can be changed into a prime (1244141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31084 + ... + 31123.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

2^1244140 is an apocalyptic number.

1244140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244140 is an abundant number, since it is smaller than the sum of its proper divisors (1368596).

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

1244140 is a wasteful number, since it uses less digits than its factorization.

1244140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62216 (or 62214 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1244140 is about 1115.4102384325. The cubic root of 1244140 is about 107.5531376019.

Adding to 1244140 its reverse (414421), we get a palindrome (1658561).

The spelling of 1244140 in words is "one million, two hundred forty-four thousand, one hundred forty".