124640159 has 4 divisors (see below), whose sum is σ = 142445904. Its totient is φ = 106834416.

The previous prime is 124640147. The next prime is 124640177. The reversal of 124640159 is 951046421.

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

It is a cyclic number.

It is not a de Polignac number, because 124640159 - 2¹² = 124636063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124640129) 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, 8902862 + ... + 8902875.

It is an arithmetic number, because the mean of its divisors is an integer number (35611476).

Almost surely, 2^124640159 is an apocalyptic number.

124640159 is a deficient number, since it is larger than the sum of its proper divisors (17805745).

124640159 is an equidigital number, since it uses as much as digits as its factorization.

124640159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17805744.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 124640159 is about 11164.2357105178. The cubic root of 124640159 is about 499.5197508692.

The spelling of 124640159 in words is "one hundred twenty-four million, six hundred forty thousand, one hundred fifty-nine".