1142242100 has 72 divisors (see below), whose sum is σ = 2595667200. Its totient is φ = 435473280.

The previous prime is 1142242097. The next prime is 1142242103. The reversal of 1142242100 is 12422411.

It is an interprime number because it is at equal distance from previous prime (1142242097) and next prime (1142242103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142242103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801989 + ... + 803411.

Almost surely, 2^1142242100 is an apocalyptic number.

1142242100 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 1142242100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297833600).

1142242100 is an abundant number, since it is smaller than the sum of its proper divisors (1453425100).

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

1142242100 is a wasteful number, since it uses less digits than its factorization.

1142242100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1802 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1142242100 is about 33797.0723584159. The cubic root of 1142242100 is about 1045.3283310082.

Adding to 1142242100 its reverse (12422411), we get a palindrome (1154664511).

The spelling of 1142242100 in words is "one billion, one hundred forty-two million, two hundred forty-two thousand, one hundred".