125109402 has 48 divisors (see below), whose sum is σ = 276363360. Its totient is φ = 37729120.

The previous prime is 125109401. The next prime is 125109421. The reversal of 125109402 is 204901521.

It is not an unprimeable number, because it can be changed into a prime (125109401) 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 23 ways as a sum of consecutive naturals, for example, 282193 + ... + 282635.

It is an arithmetic number, because the mean of its divisors is an integer number (5757570).

Almost surely, 2^125109402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125109402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138181680).

125109402 is an abundant number, since it is smaller than the sum of its proper divisors (151253958).

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

125109402 is a wasteful number, since it uses less digits than its factorization.

125109402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 125109402 is about 11185.2314236228. The cubic root of 125109402 is about 500.1458267983.

It can be divided in two parts, 12510 and 9402, that added together give a palindrome (21912).

The spelling of 125109402 in words is "one hundred twenty-five million, one hundred nine thousand, four hundred two".