124389040 has 20 divisors (see below), whose sum is σ = 289204704. Its totient is φ = 49755584.

The previous prime is 124389011. The next prime is 124389047. The reversal of 124389040 is 40983421.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 124388993 and 124389011.

It is not an unprimeable number, because it can be changed into a prime (124389047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777352 + ... + 777511.

Almost surely, 2^124389040 is an apocalyptic number.

124389040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124389040 is an abundant number, since it is smaller than the sum of its proper divisors (164815664).

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

124389040 is a wasteful number, since it uses less digits than its factorization.

124389040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554876 (or 1554870 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 124389040 is about 11152.9834573535. The cubic root of 124389040 is about 499.1840558613.

The spelling of 124389040 in words is "one hundred twenty-four million, three hundred eighty-nine thousand, forty".