401004012 has 24 divisors (see below), whose sum is σ = 936791856. Its totient is φ = 133508608.

The previous prime is 401004001. The next prime is 401004031. The reversal of 401004012 is 210400104.

It is a super-2 number, since 2×401004012² = 321608435280192288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9213 + ... + 29780.

It is an arithmetic number, because the mean of its divisors is an integer number (39032994).

Almost surely, 2^401004012 is an apocalyptic number.

It is an amenable number.

401004012 is an abundant number, since it is smaller than the sum of its proper divisors (535787844).

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

401004012 is a wasteful number, since it uses less digits than its factorization.

401004012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39857 (or 39855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 401004012 is about 20025.0845691098. The cubic root of 401004012 is about 737.4222533000.

Adding to 401004012 its reverse (210400104), we get a palindrome (611404116).

The spelling of 401004012 in words is "four hundred one million, four thousand, twelve".