124639105 has 8 divisors (see below), whose sum is σ = 151616232. Its totient is φ = 98345088.

The previous prime is 124639103. The next prime is 124639157. The reversal of 124639105 is 501936421.

It can be written as a sum of positive squares in 4 ways, for example, as 361201 + 124277904 = 601^2 + 11148^2 .

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 124639105 - 2¹ = 124639103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124639103) 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, 170374 + ... + 171103.

It is an arithmetic number, because the mean of its divisors is an integer number (18952029).

Almost surely, 2^124639105 is an apocalyptic number.

It is an amenable number.

124639105 is a deficient number, since it is larger than the sum of its proper divisors (26977127).

124639105 is an equidigital number, since it uses as much as digits as its factorization.

124639105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341555.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 124639105 is about 11164.1885061119. The cubic root of 124639105 is about 499.5183428284.

The spelling of 124639105 in words is "one hundred twenty-four million, six hundred thirty-nine thousand, one hundred five".