125442742 has 4 divisors (see below), whose sum is σ = 188164116. Its totient is φ = 62721370.

The previous prime is 125442721. The next prime is 125442743. The reversal of 125442742 is 247244521.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125442743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31360684 + ... + 31360687.

It is an arithmetic number, because the mean of its divisors is an integer number (47041029).

Almost surely, 2^125442742 is an apocalyptic number.

125442742 is a deficient number, since it is larger than the sum of its proper divisors (62721374).

125442742 is an equidigital number, since it uses as much as digits as its factorization.

125442742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62721373.

The product of its digits is 17920, while the sum is 31.

The square root of 125442742 is about 11200.1224100453. The cubic root of 125442742 is about 500.5896270732.

The spelling of 125442742 in words is "one hundred twenty-five million, four hundred forty-two thousand, seven hundred forty-two".