402060042 has 24 divisors (see below), whose sum is σ = 871589316. Its totient is φ = 133949376.

The previous prime is 402060041. The next prime is 402060077. The reversal of 402060042 is 240060204.

402060042 is a `hidden beast` number, since 4 + 0 + 20 + 600 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 338523201 + 63536841 = 18399^2 + 7971^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 402059997 and 402060024.

It is not an unprimeable number, because it can be changed into a prime (402060041) 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, 38088 + ... + 47484.

Almost surely, 2^402060042 is an apocalyptic number.

402060042 is an abundant number, since it is smaller than the sum of its proper divisors (469529274).

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

402060042 is a wasteful number, since it uses less digits than its factorization.

402060042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11782 (or 11779 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 402060042 is about 20051.4349112476. The cubic root of 402060042 is about 738.0690111066.

The spelling of 402060042 in words is "four hundred two million, sixty thousand, forty-two".