125717420 has 24 divisors (see below), whose sum is σ = 264769344. Its totient is φ = 50141696.

The previous prime is 125717413. The next prime is 125717443. The reversal of 125717420 is 24717521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844 + ... + 15963.

It is an arithmetic number, because the mean of its divisors is an integer number (11032056).

Almost surely, 2^125717420 is an apocalyptic number.

125717420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125717420 is an abundant number, since it is smaller than the sum of its proper divisors (139051924).

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

125717420 is a wasteful number, since it uses less digits than its factorization.

125717420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18169 (or 18167 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 125717420 is about 11212.3779814988. The cubic root of 125717420 is about 500.9547357988.

It can be divided in two parts, 12571 and 7420, that added together give a palindrome (19991).

The spelling of 125717420 in words is "one hundred twenty-five million, seven hundred seventeen thousand, four hundred twenty".