1242655832 has 64 divisors (see below), whose sum is σ = 2632780800. Its totient is φ = 544752000.

The previous prime is 1242655807. The next prime is 1242655849. The reversal of 1242655832 is 2385562421.

It is a happy number.

It is a super-2 number, since 2×1242655832² = 3088387033607224448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060607 + ... + 1061777.

It is an arithmetic number, because the mean of its divisors is an integer number (41137200).

Almost surely, 2^1242655832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242655832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316390400).

1242655832 is an abundant number, since it is smaller than the sum of its proper divisors (1390124968).

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

1242655832 is a wasteful number, since it uses less digits than its factorization.

1242655832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 1604 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 1242655832 is about 35251.3238332974. The cubic root of 1242655832 is about 1075.1035290954.

The spelling of 1242655832 in words is "one billion, two hundred forty-two million, six hundred fifty-five thousand, eight hundred thirty-two".