42365139 has 16 divisors (see below), whose sum is σ = 60366240. Its totient is φ = 26334720.

The previous prime is 42365131. The next prime is 42365161. The reversal of 42365139 is 93156324.

It is not a de Polignac number, because 42365139 - 2³ = 42365131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42365131) 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, 1749 + ... + 9369.

It is an arithmetic number, because the mean of its divisors is an integer number (3772890).

Almost surely, 2^42365139 is an apocalyptic number.

42365139 is a deficient number, since it is larger than the sum of its proper divisors (18001101).

42365139 is a wasteful number, since it uses less digits than its factorization.

42365139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750.

The product of its digits is 19440, while the sum is 33.

The square root of 42365139 is about 6508.8508202293. The cubic root of 42365139 is about 348.6070870359.

The spelling of 42365139 in words is "forty-two million, three hundred sixty-five thousand, one hundred thirty-nine".