40440042402 has 32 divisors (see below), whose sum is σ = 82039910400. Its totient is φ = 13286805840.

The previous prime is 40440042397. The next prime is 40440042421. The reversal of 40440042402 is 20424004404.

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, 2130349 + ... + 2149247.

It is an arithmetic number, because the mean of its divisors is an integer number (2563747200).

Almost surely, 2^40440042402 is an apocalyptic number.

40440042402 is an abundant number, since it is smaller than the sum of its proper divisors (41599867998).

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

40440042402 is a wasteful number, since it uses less digits than its factorization.

40440042402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40440042402 its reverse (20424004404), we get a palindrome (60864046806).

The spelling of 40440042402 in words is "forty billion, four hundred forty million, forty-two thousand, four hundred two".