42909524 has 24 divisors (see below), whose sum is σ = 90336960. Its totient is φ = 17421696.

The previous prime is 42909523. The next prime is 42909527. The reversal of 42909524 is 42590924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42909523) 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, 39797 + ... + 40860.

It is an arithmetic number, because the mean of its divisors is an integer number (3764040).

Almost surely, 2^42909524 is an apocalyptic number.

It is an amenable number.

42909524 is an abundant number, since it is smaller than the sum of its proper divisors (47427436).

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

42909524 is a wasteful number, since it uses less digits than its factorization.

42909524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80687 (or 80685 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 42909524 is about 6550.5361612619. The cubic root of 42909524 is about 350.0939176534.

The spelling of 42909524 in words is "forty-two million, nine hundred nine thousand, five hundred twenty-four".