400407942145 has 16 divisors (see below), whose sum is σ = 481326312960. Its totient is φ = 319768697664.

The previous prime is 400407942097. The next prime is 400407942163. The reversal of 400407942145 is 541249704004.

It is a cyclic number.

It is not a de Polignac number, because 400407942145 - 2³⁷ = 262968988673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400407942098 and 400407942107.

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, 23713816 + ... + 23730694.

It is an arithmetic number, because the mean of its divisors is an integer number (30082894560).

Almost surely, 2^400407942145 is an apocalyptic number.

It is an amenable number.

400407942145 is a deficient number, since it is larger than the sum of its proper divisors (80918370815).

400407942145 is a wasteful number, since it uses less digits than its factorization.

400407942145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24864.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 400407942145 in words is "four hundred billion, four hundred seven million, nine hundred forty-two thousand, one hundred forty-five".