400142044001 has 32 divisors (see below), whose sum is σ = 497335296000. Its totient is φ = 314171706240.

The previous prime is 400142043949. The next prime is 400142044031. The reversal of 400142044001 is 100440241004.

It is a happy number.

It is not a de Polignac number, because 400142044001 - 2⁶ = 400142043937 is a prime.

It is a super-2 number, since 2×400142044001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400142044031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4753325 + ... + 4836773.

It is an arithmetic number, because the mean of its divisors is an integer number (15541728000).

Almost surely, 2^400142044001 is an apocalyptic number.

It is an amenable number.

400142044001 is a deficient number, since it is larger than the sum of its proper divisors (97193251999).

400142044001 is a wasteful number, since it uses less digits than its factorization.

400142044001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84669.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 400142044001 its reverse (100440241004), we get a palindrome (500582285005).

The spelling of 400142044001 in words is "four hundred billion, one hundred forty-two million, forty-four thousand, one".