124042540 has 48 divisors (see below), whose sum is σ = 277929792. Its totient is φ = 46340096.

The previous prime is 124042517. The next prime is 124042547. The reversal of 124042540 is 45240421.

It is a happy number.

It is a super-3 number, since 3×124042540³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (124042547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45249 + ... + 47911.

It is an arithmetic number, because the mean of its divisors is an integer number (5790204).

Almost surely, 2^124042540 is an apocalyptic number.

124042540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124042540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138964896).

124042540 is an abundant number, since it is smaller than the sum of its proper divisors (153887252).

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

124042540 is a wasteful number, since it uses less digits than its factorization.

124042540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 124042540 is about 11137.4386642531. The cubic root of 124042540 is about 498.7201132419.

Adding to 124042540 its reverse (45240421), we get a palindrome (169282961).

The spelling of 124042540 in words is "one hundred twenty-four million, forty-two thousand, five hundred forty".