40245387842 has 16 divisors (see below), whose sum is σ = 66000210912. Its totient is φ = 18253324320.

The previous prime is 40245387839. The next prime is 40245387883. The reversal of 40245387842 is 24878354204.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1991408 + ... + 2011515.

It is an arithmetic number, because the mean of its divisors is an integer number (4125013182).

Almost surely, 2^40245387842 is an apocalyptic number.

40245387842 is a deficient number, since it is larger than the sum of its proper divisors (25754823070).

40245387842 is a wasteful number, since it uses less digits than its factorization.

40245387842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003393.

The product of its (nonzero) digits is 1720320, while the sum is 47.

The spelling of 40245387842 in words is "forty billion, two hundred forty-five million, three hundred eighty-seven thousand, eight hundred forty-two".