124389390 has 32 divisors (see below), whose sum is σ = 314248320. Its totient is φ = 31424544.

The previous prime is 124389379. The next prime is 124389457. The reversal of 124389390 is 93983421.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108544 + ... + 109683.

It is an arithmetic number, because the mean of its divisors is an integer number (9820260).

Almost surely, 2^124389390 is an apocalyptic number.

124389390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

124389390 is an abundant number, since it is smaller than the sum of its proper divisors (189858930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124389390 is a wasteful number, since it uses less digits than its factorization.

124389390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218256.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 124389390 is about 11152.9991482112. Note that the first 3 decimals coincide. The cubic root of 124389390 is about 499.1845240544.

The spelling of 124389390 in words is "one hundred twenty-four million, three hundred eighty-nine thousand, three hundred ninety".