157124209 has 8 divisors (see below), whose sum is σ = 171592128. Its totient is φ = 142686960.

The previous prime is 157124203. The next prime is 157124221. The reversal of 157124209 is 902421751.

157124209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157124209 - 2⁹ = 157123697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157124203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3804 + ... + 18130.

It is an arithmetic number, because the mean of its divisors is an integer number (21449016).

Almost surely, 2^157124209 is an apocalyptic number.

It is an amenable number.

157124209 is a deficient number, since it is larger than the sum of its proper divisors (14467919).

157124209 is a wasteful number, since it uses less digits than its factorization.

157124209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 157124209 is about 12534.9195849036. The cubic root of 157124209 is about 539.6112989201.

The spelling of 157124209 in words is "one hundred fifty-seven million, one hundred twenty-four thousand, two hundred nine".