40021157461242 has 64 divisors (see below), whose sum is σ = 82776614425344. Its totient is φ = 12892561543680.

The previous prime is 40021157461211. The next prime is 40021157461261. The reversal of 40021157461242 is 24216475112004.

It is a self number, because there is not a number n which added to its sum of digits gives 40021157461242.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23960148 + ... + 25575984.

It is an arithmetic number, because the mean of its divisors is an integer number (1293384600396).

Almost surely, 2^{40021157461242} is an apocalyptic number.

40021157461242 is an abundant number, since it is smaller than the sum of its proper divisors (42755456964102).

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

40021157461242 is a wasteful number, since it uses less digits than its factorization.

40021157461242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617063.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 40021157461242 in words is "forty trillion, twenty-one billion, one hundred fifty-seven million, four hundred sixty-one thousand, two hundred forty-two".