40012421004 has 36 divisors (see below), whose sum is σ = 101149762896. Its totient is φ = 13336517088.

The previous prime is 40012420969. The next prime is 40012421011.

40012421004 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 617617 + ... + 679319.

It is an arithmetic number, because the mean of its divisors is an integer number (2809715636).

Almost surely, 2^40012421004 is an apocalyptic number.

It is an amenable number.

40012421004 is an abundant number, since it is smaller than the sum of its proper divisors (61137341892).

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

40012421004 is a wasteful number, since it uses less digits than its factorization.

40012421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79726 (or 79721 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The spelling of 40012421004 in words is "forty billion, twelve million, four hundred twenty-one thousand, four".