123749424 has 40 divisors (see below), whose sum is σ = 355207920. Its totient is φ = 41249664.

The previous prime is 123749411. The next prime is 123749501. The reversal of 123749424 is 424947321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142797 + ... + 143660.

It is an arithmetic number, because the mean of its divisors is an integer number (8880198).

Almost surely, 2^123749424 is an apocalyptic number.

It is an amenable number.

123749424 is an abundant number, since it is smaller than the sum of its proper divisors (231458496).

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

123749424 is a wasteful number, since it uses less digits than its factorization.

123749424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286474 (or 286462 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 123749424 is about 11124.2718413387. The cubic root of 123749424 is about 498.3269735420.

The spelling of 123749424 in words is "one hundred twenty-three million, seven hundred forty-nine thousand, four hundred twenty-four".