407856042 has 24 divisors (see below), whose sum is σ = 964023840. Its totient is φ = 123592680.

The previous prime is 407856019. The next prime is 407856049. The reversal of 407856042 is 240658704.

407856042 is a `hidden beast` number, since 40 + 7 + 8 + 5 + 604 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 407855988 and 407856006.

It is not an unprimeable number, because it can be changed into a prime (407856049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029742 + ... + 1030137.

It is an arithmetic number, because the mean of its divisors is an integer number (40167660).

Almost surely, 2^407856042 is an apocalyptic number.

407856042 is an abundant number, since it is smaller than the sum of its proper divisors (556167798).

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

407856042 is a wasteful number, since it uses less digits than its factorization.

407856042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059898 (or 2059895 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 407856042 is about 20195.4460708349. The cubic root of 407856042 is about 741.5987118706.

The spelling of 407856042 in words is "four hundred seven million, eight hundred fifty-six thousand, forty-two".