321023251242 has 16 divisors (see below), whose sum is σ = 713385002880. Its totient is φ = 107007750396.

The previous prime is 321023251231. The next prime is 321023251243. The reversal of 321023251242 is 242152320123.

321023251242 is a `hidden beast` number, since 3 + 2 + 102 + 3 + 2 + 512 + 42 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (321023251243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2972437458 + ... + 2972437565.

It is an arithmetic number, because the mean of its divisors is an integer number (44586562680).

Almost surely, 2^321023251242 is an apocalyptic number.

321023251242 is an abundant number, since it is smaller than the sum of its proper divisors (392361751638).

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

321023251242 is a wasteful number, since it uses less digits than its factorization.

321023251242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944875034 (or 5944875028 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 321023251242 its reverse (242152320123), we get a palindrome (563175571365).

It can be divided in two parts, 32102 and 3251242, that added together give a square (3283344 = 1812²).

The spelling of 321023251242 in words is "three hundred twenty-one billion, twenty-three million, two hundred fifty-one thousand, two hundred forty-two".