321142402 has 16 divisors (see below), whose sum is σ = 551417472. Its totient is φ = 137410560.

The previous prime is 321142387. The next prime is 321142411. The reversal of 321142402 is 204241123.

It is a self number, because there is not a number n which added to its sum of digits gives 321142402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9343 + ... + 27010.

It is an arithmetic number, because the mean of its divisors is an integer number (34463592).

Almost surely, 2^321142402 is an apocalyptic number.

321142402 is a deficient number, since it is larger than the sum of its proper divisors (230275070).

321142402 is a wasteful number, since it uses less digits than its factorization.

321142402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36993.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 321142402 is about 17920.4464788130. The cubic root of 321142402 is about 684.8033619606.

Adding to 321142402 its reverse (204241123), we get a palindrome (525383525).

The spelling of 321142402 in words is "three hundred twenty-one million, one hundred forty-two thousand, four hundred two".