3125987 has 4 divisors (see below), whose sum is σ = 3134040. Its totient is φ = 3117936.

The previous prime is 3125959. The next prime is 3125989. The reversal of 3125987 is 7895213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7895213 = 67 ⋅117839.

It is a cyclic number.

It is not a de Polignac number, because 3125987 - 2¹⁰ = 3124963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125989) 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, 3413 + ... + 4230.

It is an arithmetic number, because the mean of its divisors is an integer number (783510).

Almost surely, 2^3125987 is an apocalyptic number.

3125987 is a deficient number, since it is larger than the sum of its proper divisors (8053).

3125987 is an equidigital number, since it uses as much as digits as its factorization.

3125987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052.

The product of its digits is 15120, while the sum is 35.

The square root of 3125987 is about 1768.0460966841. The cubic root of 3125987 is about 146.2162773198.

The spelling of 3125987 in words is "three million, one hundred twenty-five thousand, nine hundred eighty-seven".