42115724 has 24 divisors (see below), whose sum is σ = 84489888. Its totient is φ = 17994240.

The previous prime is 42115699. The next prime is 42115727. The reversal of 42115724 is 42751124.

It is a junction number, because it is equal to n+sod(n) for n = 42115693 and 42115702.

It is not an unprimeable number, because it can be changed into a prime (42115727) 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, 7754 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (3520412).

Almost surely, 2^42115724 is an apocalyptic number.

It is an amenable number.

42115724 is an abundant number, since it is smaller than the sum of its proper divisors (42374164).

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

42115724 is a wasteful number, since it uses less digits than its factorization.

42115724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4623 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 42115724 is about 6489.6628571907. The cubic root of 42115724 is about 347.9216254559.

Adding to 42115724 its reverse (42751124), we get a palindrome (84866848).

The spelling of 42115724 in words is "forty-two million, one hundred fifteen thousand, seven hundred twenty-four".