40042444021000 has 64 divisors (see below), whose sum is σ = 97773202500480. Its totient is φ = 15320587268800.

The previous prime is 40042444020991. The next prime is 40042444021033. The reversal of 40042444021000 is 12044424004.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870464914 + ... + 870510913.

It is an arithmetic number, because the mean of its divisors is an integer number (1527706289070).

Almost surely, 2^{40042444021000} is an apocalyptic number.

40042444021000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40042444021000 is an abundant number, since it is smaller than the sum of its proper divisors (57730758479480).

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

40042444021000 is a wasteful number, since it uses less digits than its factorization.

40042444021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740975871 (or 1740975857 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 40042444021000 its reverse (12044424004), we get a palindrome (40054488445004).

The spelling of 40042444021000 in words is "forty trillion, forty-two billion, four hundred forty-four million, twenty-one thousand".