321025100242 has 144 divisors (see below), whose sum is σ = 680281338240. Its totient is φ = 112597605120.

The previous prime is 321025100197. The next prime is 321025100243. The reversal of 321025100242 is 242001520123.

It is a happy number.

It is a super-4 number, since 4×321025100242⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (321025100243) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4601859 + ... + 4671097.

It is an arithmetic number, because the mean of its divisors is an integer number (4724175960).

Almost surely, 2^321025100242 is an apocalyptic number.

321025100242 is an abundant number, since it is smaller than the sum of its proper divisors (359256237998).

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

321025100242 is a wasteful number, since it uses less digits than its factorization.

321025100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69317 (or 69299 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 321025100242 its reverse (242001520123), we get a palindrome (563026620365).

The spelling of 321025100242 in words is "three hundred twenty-one billion, twenty-five million, one hundred thousand, two hundred forty-two".