400021000120004 has 12 divisors (see below), whose sum is σ = 700047687536064. Its totient is φ = 200007375109704.

The previous prime is 400021000120003. The next prime is 400021000120043.

400021000120004 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (400021000120003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780949544 + ... + 781461599.

It is an arithmetic number, because the mean of its divisors is an integer number (58337307294672).

Almost surely, 2^{400021000120004} is an apocalyptic number.

It is an amenable number.

400021000120004 is a deficient number, since it is larger than the sum of its proper divisors (300026687416060).

400021000120004 is a wasteful number, since it uses less digits than its factorization.

400021000120004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562475154 (or 1562475152 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

It can be divided in two parts, 400021000 and 120004, that added together give a palindrome (400141004).

The spelling of 400021000120004 in words is "four hundred trillion, twenty-one billion, one hundred twenty thousand, four".