401845042 has 4 divisors (see below), whose sum is σ = 602767566. Its totient is φ = 200922520.

The previous prime is 401845039. The next prime is 401845061. The reversal of 401845042 is 240548104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 268927201 + 132917841 = 16399^2 + 11529^2 .

It is a super-2 number, since 2×401845042² = 322958875559963528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401845042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100461259 + ... + 100461262.

Almost surely, 2^401845042 is an apocalyptic number.

401845042 is a deficient number, since it is larger than the sum of its proper divisors (200922524).

401845042 is a wasteful number, since it uses less digits than its factorization.

401845042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200922523.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 401845042 is about 20046.0729820082. The cubic root of 401845042 is about 737.9374278316.

The spelling of 401845042 in words is "four hundred one million, eight hundred forty-five thousand, forty-two".