321087892042 has 16 divisors (see below), whose sum is σ = 491419372392. Its totient is φ = 157290078400.

The previous prime is 321087892039. The next prime is 321087892049. The reversal of 321087892042 is 240298780123.

It can be written as a sum of positive squares in 4 ways, for example, as 298007901801 + 23079990241 = 545901^2 + 151921^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321087891983 and 321087892001.

It is not an unprimeable number, because it can be changed into a prime (321087892049) 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, 2086273 + ... + 2234884.

Almost surely, 2^321087892042 is an apocalyptic number.

321087892042 is a deficient number, since it is larger than the sum of its proper divisors (170331480350).

321087892042 is a wasteful number, since it uses less digits than its factorization.

321087892042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321913.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 321087892042 in words is "three hundred twenty-one billion, eighty-seven million, eight hundred ninety-two thousand, forty-two".