1142439012 has 96 divisors (see below), whose sum is σ = 3479736960. Its totient is φ = 319559040.

The previous prime is 1142438993. The next prime is 1142439059. The reversal of 1142439012 is 2109342411.

It is a happy number.

It is a super-2 number, since 2×1142439012² = 2610333792279072288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21543 + ... + 52430.

It is an arithmetic number, because the mean of its divisors is an integer number (36247260).

Almost surely, 2^1142439012 is an apocalyptic number.

1142439012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142439012 is an abundant number, since it is smaller than the sum of its proper divisors (2337297948).

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

1142439012 is a wasteful number, since it uses less digits than its factorization.

1142439012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74010 (or 74002 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1142439012 is about 33799.9853846122. The cubic root of 1142439012 is about 1045.3883958769.

The spelling of 1142439012 in words is "one billion, one hundred forty-two million, four hundred thirty-nine thousand, twelve".