125366642 has 4 divisors (see below), whose sum is σ = 188049966. Its totient is φ = 62683320.

The previous prime is 125366641. The next prime is 125366671. The reversal of 125366642 is 246663521.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 114083761 + 11282881 = 10681^2 + 3359^2 .

It is not an unprimeable number, because it can be changed into a prime (125366641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31341659 + ... + 31341662.

Almost surely, 2^125366642 is an apocalyptic number.

125366642 is a deficient number, since it is larger than the sum of its proper divisors (62683324).

125366642 is an equidigital number, since it uses as much as digits as its factorization.

125366642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62683323.

The product of its digits is 51840, while the sum is 35.

The square root of 125366642 is about 11196.7246103492. The cubic root of 125366642 is about 500.4883788169.

The spelling of 125366642 in words is "one hundred twenty-five million, three hundred sixty-six thousand, six hundred forty-two".