42515655 has 32 divisors (see below), whose sum is σ = 83725824. Its totient is φ = 17940096.

The previous prime is 42515639. The next prime is 42515713. The reversal of 42515655 is 55651524.

42515655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42515655 - 2⁴ = 42515639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14209 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (2616432).

Almost surely, 2^42515655 is an apocalyptic number.

42515655 is a deficient number, since it is larger than the sum of its proper divisors (41210169).

42515655 is a wasteful number, since it uses less digits than its factorization.

42515655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31175.

The product of its digits is 30000, while the sum is 33.

The square root of 42515655 is about 6520.4029783442. The cubic root of 42515655 is about 349.0194459380.

The spelling of 42515655 in words is "forty-two million, five hundred fifteen thousand, six hundred fifty-five".