40245731427742 has 4 divisors (see below), whose sum is σ = 60368597141616. Its totient is φ = 20122865713870.

The previous prime is 40245731427667. The next prime is 40245731427751. The reversal of 40245731427742 is 24772413754204.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40245731427742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061432856934 + ... + 10061432856937.

It is an arithmetic number, because the mean of its divisors is an integer number (15092149285404).

Almost surely, 2^{40245731427742} is an apocalyptic number.

40245731427742 is a deficient number, since it is larger than the sum of its proper divisors (20122865713874).

40245731427742 is a wasteful number, since it uses less digits than its factorization.

40245731427742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20122865713873.

The product of its (nonzero) digits is 10536960, while the sum is 52.

The spelling of 40245731427742 in words is "forty trillion, two hundred forty-five billion, seven hundred thirty-one million, four hundred twenty-seven thousand, seven hundred forty-two".