125340242 has 4 divisors (see below), whose sum is σ = 188010366. Its totient is φ = 62670120.

The previous prime is 125340221. The next prime is 125340247. The reversal of 125340242 is 242043521.

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., 125238481 + 101761 = 11191^2 + 319^2 .

It is not an unprimeable number, because it can be changed into a prime (125340247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31335059 + ... + 31335062.

Almost surely, 2^125340242 is an apocalyptic number.

125340242 is a deficient number, since it is larger than the sum of its proper divisors (62670124).

125340242 is an equidigital number, since it uses as much as digits as its factorization.

125340242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62670123.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 125340242 is about 11195.5456320806. The cubic root of 125340242 is about 500.4532450138.

Adding to 125340242 its reverse (242043521), we get a palindrome (367383763).

The spelling of 125340242 in words is "one hundred twenty-five million, three hundred forty thousand, two hundred forty-two".