400442131104 has 48 divisors (see below), whose sum is σ = 1051287164928. Its totient is φ = 133464637952.

The previous prime is 400442131021. The next prime is 400442131151. The reversal of 400442131104 is 401131244004.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×400442131104² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 564004 + ... + 1057820.

It is an arithmetic number, because the mean of its divisors is an integer number (21901815936).

Almost surely, 2^400442131104 is an apocalyptic number.

It is an amenable number.

400442131104 is an abundant number, since it is smaller than the sum of its proper divisors (650845033824).

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

400442131104 is a wasteful number, since it uses less digits than its factorization.

400442131104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502277 (or 502269 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 400442131104 its reverse (401131244004), we get a palindrome (801573375108).

The spelling of 400442131104 in words is "four hundred billion, four hundred forty-two million, one hundred thirty-one thousand, one hundred four".