124840172 has 6 divisors (see below), whose sum is σ = 218470308. Its totient is φ = 62420084.

The previous prime is 124840153. The next prime is 124840213. The reversal of 124840172 is 271048421.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605018 + ... + 15605025.

It is an arithmetic number, because the mean of its divisors is an integer number (36411718).

Almost surely, 2^124840172 is an apocalyptic number.

It is an amenable number.

124840172 is a deficient number, since it is larger than the sum of its proper divisors (93630136).

124840172 is a wasteful number, since it uses less digits than its factorization.

124840172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31210047 (or 31210045 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 124840172 is about 11173.1898757696. The cubic root of 124840172 is about 499.7868051088.

Adding to 124840172 its reverse (271048421), we get a palindrome (395888593).

The spelling of 124840172 in words is "one hundred twenty-four million, eight hundred forty thousand, one hundred seventy-two".