124243155 has 12 divisors (see below), whose sum is σ = 215354880. Its totient is φ = 66262992.

The previous prime is 124243121. The next prime is 124243169. The reversal of 124243155 is 551342421.

It is not a de Polignac number, because 124243155 - 2⁷ = 124243027 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1380435 + ... + 1380524.

It is an arithmetic number, because the mean of its divisors is an integer number (17946240).

Almost surely, 2^124243155 is an apocalyptic number.

124243155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

124243155 is a deficient number, since it is larger than the sum of its proper divisors (91111725).

124243155 is a wasteful number, since it uses less digits than its factorization.

124243155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760970 (or 2760967 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 124243155 is about 11146.4413603625. The cubic root of 124243155 is about 498.9888297814.

Adding to 124243155 its reverse (551342421), we get a palindrome (675585576).

The spelling of 124243155 in words is "one hundred twenty-four million, two hundred forty-three thousand, one hundred fifty-five".