125142820 has 24 divisors (see below), whose sum is σ = 286691328. Its totient is φ = 45506400.

The previous prime is 125142817. The next prime is 125142841. The reversal of 125142820 is 28241521.

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, 284196 + ... + 284635.

It is an arithmetic number, because the mean of its divisors is an integer number (11945472).

Almost surely, 2^125142820 is an apocalyptic number.

125142820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125142820 is an abundant number, since it is smaller than the sum of its proper divisors (161548508).

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

125142820 is a wasteful number, since it uses less digits than its factorization.

125142820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568851 (or 568849 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 125142820 is about 11186.7251686988. The cubic root of 125142820 is about 500.1903541880.

The spelling of 125142820 in words is "one hundred twenty-five million, one hundred forty-two thousand, eight hundred twenty".