42087522 has 32 divisors (see below), whose sum is σ = 88141824. Its totient is φ = 13381200.

The previous prime is 42087509. The next prime is 42087523. The reversal of 42087522 is 22578024.

It is a self number, because there is not a number n which added to its sum of digits gives 42087522.

It is not an unprimeable number, because it can be changed into a prime (42087523) 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, 11613 + ... + 14799.

It is an arithmetic number, because the mean of its divisors is an integer number (2754432).

Almost surely, 2^42087522 is an apocalyptic number.

42087522 is an abundant number, since it is smaller than the sum of its proper divisors (46054302).

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

42087522 is a wasteful number, since it uses less digits than its factorization.

42087522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42087522 is about 6487.4896531709. The cubic root of 42087522 is about 347.8439483975.

The spelling of 42087522 in words is "forty-two million, eighty-seven thousand, five hundred twenty-two".