124172940 has 24 divisors (see below), whose sum is σ = 347684400. Its totient is φ = 33112768.

The previous prime is 124172933. The next prime is 124172941. The reversal of 124172940 is 49271421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 124172898 and 124172907.

It is not an unprimeable number, because it can be changed into a prime (124172941) 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, 1034715 + ... + 1034834.

It is an arithmetic number, because the mean of its divisors is an integer number (14486850).

Almost surely, 2^124172940 is an apocalyptic number.

124172940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124172940 is an abundant number, since it is smaller than the sum of its proper divisors (223511460).

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

124172940 is a wasteful number, since it uses less digits than its factorization.

124172940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069561 (or 2069559 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 124172940 is about 11143.2912552800. The cubic root of 124172940 is about 498.8948122533.

The spelling of 124172940 in words is "one hundred twenty-four million, one hundred seventy-two thousand, nine hundred forty".