3125121402 has 16 divisors (see below), whose sum is σ = 6731030880. Its totient is φ = 961575792.

The previous prime is 3125121397. The next prime is 3125121443. The reversal of 3125121402 is 2041215213.

3125121402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20032752 + ... + 20032907.

It is an arithmetic number, because the mean of its divisors is an integer number (420689430).

Almost surely, 2^3125121402 is an apocalyptic number.

3125121402 is an abundant number, since it is smaller than the sum of its proper divisors (3605909478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3125121402 is a wasteful number, since it uses less digits than its factorization.

3125121402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40065677.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3125121402 is about 55902.7852794474. The cubic root of 3125121402 is about 1462.0278012134.

Adding to 3125121402 its reverse (2041215213), we get a palindrome (5166336615).

The spelling of 3125121402 in words is "three billion, one hundred twenty-five million, one hundred twenty-one thousand, four hundred two".