321404125 has 96 divisors (see below), whose sum is σ = 514934784. Its totient is φ = 195840000.

The previous prime is 321404123. The next prime is 321404131. The reversal of 321404125 is 521404123.

It is not a de Polignac number, because 321404125 - 2¹ = 321404123 is a prime.

It is a super-2 number, since 2×321404125² = 206601223134031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321404096 and 321404105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321404123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7839105 + ... + 7839145.

It is an arithmetic number, because the mean of its divisors is an integer number (5363904).

Almost surely, 2^321404125 is an apocalyptic number.

321404125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

321404125 is a deficient number, since it is larger than the sum of its proper divisors (193530659).

321404125 is a wasteful number, since it uses less digits than its factorization.

321404125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 101 counting only the distinct ones).

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

The square root of 321404125 is about 17927.7473487329. The cubic root of 321404125 is about 684.9893439655.

Adding to 321404125 its reverse (521404123), we get a palindrome (842808248).

The spelling of 321404125 in words is "three hundred twenty-one million, four hundred four thousand, one hundred twenty-five".