4002131744420 has 48 divisors (see below), whose sum is σ = 8454508997760. Its totient is φ = 1591348322304.

The previous prime is 4002131744371. The next prime is 4002131744423. The reversal of 4002131744420 is 244471312004.

It is a super-2 number, since 2×4002131744420² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4002131744423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1703771 + ... + 3302589.

It is an arithmetic number, because the mean of its divisors is an integer number (176135604120).

Almost surely, 2^{4002131744420} is an apocalyptic number.

It is an amenable number.

4002131744420 is an abundant number, since it is smaller than the sum of its proper divisors (4452377253340).

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

4002131744420 is a wasteful number, since it uses less digits than its factorization.

4002131744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599572 (or 1599570 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 4002131744420 in words is "four trillion, two billion, one hundred thirty-one million, seven hundred forty-four thousand, four hundred twenty".