3125102420 has 48 divisors (see below), whose sum is σ = 7170303168. Its totient is φ = 1134658560.

The previous prime is 3125102381. The next prime is 3125102459. The reversal of 3125102420 is 242015213.

It is an interprime number because it is at equal distance from previous prime (3125102381) and next prime (3125102459).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3125102392 and 3125102401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137507 + ... + 158613.

It is an arithmetic number, because the mean of its divisors is an integer number (149381316).

Almost surely, 2^3125102420 is an apocalyptic number.

It is an amenable number.

3125102420 is an abundant number, since it is smaller than the sum of its proper divisors (4045200748).

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

3125102420 is a wasteful number, since it uses less digits than its factorization.

3125102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21800 (or 21798 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3125102420 is about 55902.6155023180. The cubic root of 3125102420 is about 1462.0248410864.

Adding to 3125102420 its reverse (242015213), we get a palindrome (3367117633).

The spelling of 3125102420 in words is "three billion, one hundred twenty-five million, one hundred two thousand, four hundred twenty".