40452874642 has 4 divisors (see below), whose sum is σ = 60679311966. Its totient is φ = 20226437320.

The previous prime is 40452874621. The next prime is 40452874681. The reversal of 40452874642 is 24647825404.

40452874642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 201129²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40452874641 + 1 = 201129^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40452874592 and 40452874601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10113218659 + ... + 10113218662.

Almost surely, 2^40452874642 is an apocalyptic number.

40452874642 is a deficient number, since it is larger than the sum of its proper divisors (20226437324).

40452874642 is a wasteful number, since it uses less digits than its factorization.

40452874642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20226437323.

The product of its (nonzero) digits is 1720320, while the sum is 46.

The spelling of 40452874642 in words is "forty billion, four hundred fifty-two million, eight hundred seventy-four thousand, six hundred forty-two".