402621124 has 24 divisors (see below), whose sum is σ = 727469568. Its totient is φ = 194830560.

The previous prime is 402621119. The next prime is 402621151. The reversal of 402621124 is 421126204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402621095 and 402621104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21147 + ... + 35389.

It is an arithmetic number, because the mean of its divisors is an integer number (30311232).

Almost surely, 2^402621124 is an apocalyptic number.

It is an amenable number.

402621124 is a deficient number, since it is larger than the sum of its proper divisors (324848444).

402621124 is a wasteful number, since it uses less digits than its factorization.

402621124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14475 (or 14473 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 402621124 is about 20065.4211019854. The cubic root of 402621124 is about 738.4121810372.

Adding to 402621124 its reverse (421126204), we get a palindrome (823747328).

The spelling of 402621124 in words is "four hundred two million, six hundred twenty-one thousand, one hundred twenty-four".