124640155 has 16 divisors (see below), whose sum is σ = 152604000. Its totient is φ = 97699840.

The previous prime is 124640147. The next prime is 124640177. The reversal of 124640155 is 551046421.

It is not a de Polignac number, because 124640155 - 2³ = 124640147 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131985 + ... + 132925.

It is an arithmetic number, because the mean of its divisors is an integer number (9537750).

Almost surely, 2^124640155 is an apocalyptic number.

124640155 is a deficient number, since it is larger than the sum of its proper divisors (27963845).

124640155 is an equidigital number, since it uses as much as digits as its factorization.

124640155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 124640155 is about 11164.2355313743. The cubic root of 124640155 is about 499.5197455256.

Adding to 124640155 its reverse (551046421), we get a palindrome (675686576).

The spelling of 124640155 in words is "one hundred twenty-four million, six hundred forty thousand, one hundred fifty-five".