40147021642 has 16 divisors (see below), whose sum is σ = 74117578752. Its totient is φ = 15882338160.

The previous prime is 40147021597. The next prime is 40147021667. The reversal of 40147021642 is 24612074104.

It is a super-2 number, since 2×40147021642² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110293834 + ... + 110294197.

It is an arithmetic number, because the mean of its divisors is an integer number (4632348672).

Almost surely, 2^40147021642 is an apocalyptic number.

40147021642 is a deficient number, since it is larger than the sum of its proper divisors (33970557110).

40147021642 is a wasteful number, since it uses less digits than its factorization.

40147021642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220588053.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 40147021642 its reverse (24612074104), we get a palindrome (64759095746).

The spelling of 40147021642 in words is "forty billion, one hundred forty-seven million, twenty-one thousand, six hundred forty-two".