124440042 has 8 divisors (see below), whose sum is σ = 248880096. Its totient is φ = 41480012.

The previous prime is 124440023. The next prime is 124440049. The reversal of 124440042 is 240044421.

It is a sphenic number, since it is the product of 3 distinct primes.

124440042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (124440049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10369998 + ... + 10370009.

It is an arithmetic number, because the mean of its divisors is an integer number (31110012).

Almost surely, 2^124440042 is an apocalyptic number.

124440042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

124440042 is a wasteful number, since it uses less digits than its factorization.

124440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20740012.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 124440042 is about 11155.2696964260. The cubic root of 124440042 is about 499.2522716955.

Adding to 124440042 its reverse (240044421), we get a palindrome (364484463).

The spelling of 124440042 in words is "one hundred twenty-four million, four hundred forty thousand, forty-two".