1039125139 has 4 divisors (see below), whose sum is σ = 1119057856. Its totient is φ = 959192424.

The previous prime is 1039125133. The next prime is 1039125151. The reversal of 1039125139 is 9315219301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315219301 = 43 ⋅216633007.

It is a cyclic number.

It is not a de Polignac number, because 1039125139 - 2⁷ = 1039125011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039125133) 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, 39966339 + ... + 39966364.

It is an arithmetic number, because the mean of its divisors is an integer number (279764464).

Almost surely, 2^1039125139 is an apocalyptic number.

1039125139 is a deficient number, since it is larger than the sum of its proper divisors (79932717).

1039125139 is an equidigital number, since it uses as much as digits as its factorization.

1039125139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79932716.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 1039125139 is about 32235.4639954197. The cubic root of 1039125139 is about 1012.8752300034.

The spelling of 1039125139 in words is "one billion, thirty-nine million, one hundred twenty-five thousand, one hundred thirty-nine".