400681207442 has 16 divisors (see below), whose sum is σ = 603024931872. Its totient is φ = 199673416800.

The previous prime is 400681207427. The next prime is 400681207477. The reversal of 400681207442 is 244702186004.

It is a junction number, because it is equal to n+sod(n) for n = 400681207396 and 400681207405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427942 + ... + 1685342.

It is an arithmetic number, because the mean of its divisors is an integer number (37689058242).

Almost surely, 2^400681207442 is an apocalyptic number.

400681207442 is a deficient number, since it is larger than the sum of its proper divisors (202343724430).

400681207442 is a wasteful number, since it uses less digits than its factorization.

400681207442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259993.

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 400681207442 in words is "four hundred billion, six hundred eighty-one million, two hundred seven thousand, four hundred forty-two".