3125121 has 8 divisors (see below), whose sum is σ = 4187424. Its totient is φ = 2073120.

The previous prime is 3125117. The next prime is 3125147. The reversal of 3125121 is 1215213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3125121 - 2² = 3125117 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3125121.

It is not an unprimeable number, because it can be changed into a prime (3125191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (523428).

Almost surely, 2^3125121 is an apocalyptic number.

It is an amenable number.

3125121 is a deficient number, since it is larger than the sum of its proper divisors (1062303).

3125121 is a wasteful number, since it uses less digits than its factorization.

3125121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its digits is 60, while the sum is 15.

The square root of 3125121 is about 1767.8011766033. The cubic root of 3125121 is about 146.2027738524.

It can be divided in two parts, 31 and 25121, that added together give a palindrome (25152).

The spelling of 3125121 in words is "three million, one hundred twenty-five thousand, one hundred twenty-one".