39142147 has 12 divisors (see below), whose sum is σ = 45070776. Its totient is φ = 33707520.

The previous prime is 39142139. The next prime is 39142153. The reversal of 39142147 is 74124193.

It is not a de Polignac number, because 39142147 - 2³ = 39142139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39142157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 958 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (3755898).

Almost surely, 2^39142147 is an apocalyptic number.

39142147 is a deficient number, since it is larger than the sum of its proper divisors (5928629).

39142147 is a wasteful number, since it uses less digits than its factorization.

39142147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906 (or 9887 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 39142147 is about 6256.3685153610. The cubic root of 39142147 is about 339.5326537523.

The spelling of 39142147 in words is "thirty-nine million, one hundred forty-two thousand, one hundred forty-seven".