400142044000 has 48 divisors (see below), whose sum is σ = 983149011936. Its totient is φ = 160056816000.

The previous prime is 400142043949. The next prime is 400142044031. The reversal of 400142044000 is 440241004.

It is a super-2 number, since 2×400142044000² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50013756 + ... + 50021755.

It is an arithmetic number, because the mean of its divisors is an integer number (20482271082).

Almost surely, 2^400142044000 is an apocalyptic number.

400142044000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400142044000 is an abundant number, since it is smaller than the sum of its proper divisors (583006967936).

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

400142044000 is a wasteful number, since it uses less digits than its factorization.

400142044000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100035536 (or 100035518 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 400142044000 its reverse (440241004), we get a palindrome (400582285004).

The spelling of 400142044000 in words is "four hundred billion, one hundred forty-two million, forty-four thousand".