42015522 has 8 divisors (see below), whose sum is σ = 84031056. Its totient is φ = 14005172.

The previous prime is 42015487. The next prime is 42015527. The reversal of 42015522 is 22551024.

It is a happy number.

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

42015522 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42015527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3501288 + ... + 3501299.

It is an arithmetic number, because the mean of its divisors is an integer number (10503882).

Almost surely, 2^42015522 is an apocalyptic number.

42015522 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.

42015522 is a wasteful number, since it uses less digits than its factorization.

42015522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002592.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42015522 is about 6481.9381360824. The cubic root of 42015522 is about 347.6454805523.

Adding to 42015522 its reverse (22551024), we get a palindrome (64566546).

The spelling of 42015522 in words is "forty-two million, fifteen thousand, five hundred twenty-two".