39742131 has 16 divisors (see below), whose sum is σ = 62254080. Its totient is φ = 22233120.

The previous prime is 39742127. The next prime is 39742133. The reversal of 39742131 is 13124793.

It is not a de Polignac number, because 39742131 - 2² = 39742127 is a prime.

It is a super-2 number, since 2×39742131² = 3158873952842322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39742133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45891 + ... + 46748.

It is an arithmetic number, because the mean of its divisors is an integer number (3890880).

Almost surely, 2^39742131 is an apocalyptic number.

39742131 is a deficient number, since it is larger than the sum of its proper divisors (22511949).

39742131 is a wasteful number, since it uses less digits than its factorization.

39742131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92666.

The product of its digits is 4536, while the sum is 30.

The square root of 39742131 is about 6304.1360232787. The cubic root of 39742131 is about 341.2586880746.

It can be divided in two parts, 3974 and 2131, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 39742131 in words is "thirty-nine million, seven hundred forty-two thousand, one hundred thirty-one".