402020012 has 48 divisors (see below), whose sum is σ = 797136480. Its totient is φ = 176256000.

The previous prime is 402019949. The next prime is 402020023. The reversal of 402020012 is 210020204.

It is a junction number, because it is equal to n+sod(n) for n = 402019975 and 402020002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76262 + ... + 81362.

It is an arithmetic number, because the mean of its divisors is an integer number (16607010).

Almost surely, 2^402020012 is an apocalyptic number.

It is an amenable number.

402020012 is a deficient number, since it is larger than the sum of its proper divisors (395116468).

402020012 is a wasteful number, since it uses less digits than its factorization.

402020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202 (or 5200 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 402020012 is about 20050.4367034736. The cubic root of 402020012 is about 738.0445156913.

Adding to 402020012 its reverse (210020204), we get a palindrome (612040216).

The spelling of 402020012 in words is "four hundred two million, twenty thousand, twelve".