125420423120 has 40 divisors (see below), whose sum is σ = 291618734760. Its totient is φ = 50165373440.

The previous prime is 125420423111. The next prime is 125420423153. The reversal of 125420423120 is 21324024521.

It can be written as a sum of positive squares in 4 ways, for example, as 8081290816 + 117339132304 = 89896^2 + 342548^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 125420423120.

It is a congruent number.

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, 1987250 + ... + 2049390.

It is an arithmetic number, because the mean of its divisors is an integer number (7290468369).

Almost surely, 2^125420423120 is an apocalyptic number.

125420423120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125420423120 is an abundant number, since it is smaller than the sum of its proper divisors (166198311640).

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

125420423120 is a wasteful number, since it uses less digits than its factorization.

125420423120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87383 (or 87377 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 125420423120 its reverse (21324024521), we get a palindrome (146744447641).

The spelling of 125420423120 in words is "one hundred twenty-five billion, four hundred twenty million, four hundred twenty-three thousand, one hundred twenty".