400011042 has 16 divisors (see below), whose sum is σ = 825829632. Its totient is φ = 129035760.

The previous prime is 400011041. The next prime is 400011043. The reversal of 400011042 is 240110004.

It is an interprime number because it is at equal distance from previous prime (400011041) and next prime (400011043).

It is not an unprimeable number, because it can be changed into a prime (400011041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075113 + ... + 1075484.

It is an arithmetic number, because the mean of its divisors is an integer number (51614352).

Almost surely, 2^400011042 is an apocalyptic number.

400011042 is an abundant number, since it is smaller than the sum of its proper divisors (425818590).

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

400011042 is a wasteful number, since it uses less digits than its factorization.

400011042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150633.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400011042 is about 20000.2760480949. The cubic root of 400011042 is about 736.8130795117.

Adding to 400011042 its reverse (240110004), we get a palindrome (640121046).

The spelling of 400011042 in words is "four hundred million, eleven thousand, forty-two".