124917149 has 4 divisors (see below), whose sum is σ = 142762464. Its totient is φ = 107071836.

The previous prime is 124917137. The next prime is 124917157. The reversal of 124917149 is 941719421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124917149 - 2¹² = 124913053 is a prime.

It is a super-2 number, since 2×124917149² = 31208588228576402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124913149) 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, 8922647 + ... + 8922660.

It is an arithmetic number, because the mean of its divisors is an integer number (35690616).

Almost surely, 2^124917149 is an apocalyptic number.

It is an amenable number.

124917149 is a deficient number, since it is larger than the sum of its proper divisors (17845315).

124917149 is an equidigital number, since it uses as much as digits as its factorization.

124917149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17845314.

The product of its digits is 18144, while the sum is 38.

The square root of 124917149 is about 11176.6340639747. The cubic root of 124917149 is about 499.8895075847.

The spelling of 124917149 in words is "one hundred twenty-four million, nine hundred seventeen thousand, one hundred forty-nine".