3145139 has 4 divisors (see below), whose sum is σ = 3150840. Its totient is φ = 3139440.

The previous prime is 3145133. The next prime is 3145141. The reversal of 3145139 is 9315413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315413 = 71 ⋅131203.

It is a cyclic number.

It is not a de Polignac number, because 3145139 - 2⁴ = 3145123 is a prime.

It is a super-3 number, since 3×3145139³ = 93334195094163961857, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1922 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (787710).

Almost surely, 2^3145139 is an apocalyptic number.

3145139 is a deficient number, since it is larger than the sum of its proper divisors (5701).

3145139 is an equidigital number, since it uses as much as digits as its factorization.

3145139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its digits is 1620, while the sum is 26.

The square root of 3145139 is about 1773.4539745931. The cubic root of 3145139 is about 146.5142775556.

The spelling of 3145139 in words is "three million, one hundred forty-five thousand, one hundred thirty-nine".