39742744234971 has 4 divisors (see below), whose sum is σ = 52990325646632. Its totient is φ = 26495162823312.

The previous prime is 39742744234871. The next prime is 39742744234993. The reversal of 39742744234971 is 17943244724793.

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

It is not a de Polignac number, because 39742744234971 - 2²⁵ = 39742710680539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39742744234871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6623790705826 + ... + 6623790705831.

It is an arithmetic number, because the mean of its divisors is an integer number (13247581411658).

Almost surely, 2^{39742744234971} is an apocalyptic number.

39742744234971 is a deficient number, since it is larger than the sum of its proper divisors (13247581411661).

39742744234971 is a wasteful number, since it uses less digits than its factorization.

39742744234971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247581411660.

The product of its digits is 256048128, while the sum is 66.

The spelling of 39742744234971 in words is "thirty-nine trillion, seven hundred forty-two billion, seven hundred forty-four million, two hundred thirty-four thousand, nine hundred seventy-one".