40021712162042 has 8 divisors (see below), whose sum is σ = 64650458107956. Its totient is φ = 18471559459392.

The previous prime is 40021712162009. The next prime is 40021712162057. The reversal of 40021712162042 is 24026121712004.

It can be written as a sum of positive squares in 2 ways, for example, as 39361833757801 + 659878404241 = 6273901^2 + 812329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769648310783 + ... + 769648310834.

Almost surely, 2^{40021712162042} is an apocalyptic number.

40021712162042 is a deficient number, since it is larger than the sum of its proper divisors (24628745945914).

40021712162042 is a wasteful number, since it uses less digits than its factorization.

40021712162042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539296621632.

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 40021712162042 its reverse (24026121712004), we get a palindrome (64047833874046).

The spelling of 40021712162042 in words is "forty trillion, twenty-one billion, seven hundred twelve million, one hundred sixty-two thousand, forty-two".