1243024872 has 16 divisors (see below), whose sum is σ = 3107562240. Its totient is φ = 414341616.

The previous prime is 1243024829. The next prime is 1243024907. The reversal of 1243024872 is 2784203421.

It is a happy number.

It is a super-2 number, since 2×1243024872² = 3090221664821232768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25896328 + ... + 25896375.

It is an arithmetic number, because the mean of its divisors is an integer number (194222640).

Almost surely, 2^1243024872 is an apocalyptic number.

1243024872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243024872 is an abundant number, since it is smaller than the sum of its proper divisors (1864537368).

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

1243024872 is a wasteful number, since it uses less digits than its factorization.

1243024872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51792712 (or 51792708 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 1243024872 is about 35256.5578580780. The cubic root of 1243024872 is about 1075.2099455106.

The spelling of 1243024872 in words is "one billion, two hundred forty-three million, twenty-four thousand, eight hundred seventy-two".