392664242420 has 24 divisors (see below), whose sum is σ = 833860024200. Its totient is φ = 155300913152.

The previous prime is 392664242413. The next prime is 392664242461. The reversal of 392664242420 is 24242466293.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8249362276 + 384414880144 = 90826^2 + 620012^2 .

It is a congruent number.

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, 110297165 + ... + 110300724.

It is an arithmetic number, because the mean of its divisors is an integer number (34744167675).

Almost surely, 2^392664242420 is an apocalyptic number.

It is an amenable number.

392664242420 is an abundant number, since it is smaller than the sum of its proper divisors (441195781780).

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

392664242420 is a wasteful number, since it uses less digits than its factorization.

392664242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220597987 (or 220597985 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 392664242420 in words is "three hundred ninety-two billion, six hundred sixty-four million, two hundred forty-two thousand, four hundred twenty".