125430187 has 4 divisors (see below), whose sum is σ = 125582320. Its totient is φ = 125278056.

The previous prime is 125430167. The next prime is 125430197. The reversal of 125430187 is 781034521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125430187 - 2⁷ = 125430059 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125430157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74823 + ... + 76480.

It is an arithmetic number, because the mean of its divisors is an integer number (31395580).

Almost surely, 2^125430187 is an apocalyptic number.

125430187 is a deficient number, since it is larger than the sum of its proper divisors (152133).

125430187 is an equidigital number, since it uses as much as digits as its factorization.

125430187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152132.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 125430187 is about 11199.5619110749. The cubic root of 125430187 is about 500.5729259277.

It can be divided in two parts, 12543018 and 7, that multiplied together give a triangular number (87801126 = T₁₃₂₅₁).

The spelling of 125430187 in words is "one hundred twenty-five million, four hundred thirty thousand, one hundred eighty-seven".