42515554 has 8 divisors (see below), whose sum is σ = 64094400. Its totient is φ = 21150756.

The previous prime is 42515549. The next prime is 42515563. The reversal of 42515554 is 45551524.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53014 + ... + 53809.

It is an arithmetic number, because the mean of its divisors is an integer number (8011800).

Almost surely, 2^42515554 is an apocalyptic number.

42515554 is a deficient number, since it is larger than the sum of its proper divisors (21578846).

42515554 is a wasteful number, since it uses less digits than its factorization.

42515554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107024.

The product of its digits is 20000, while the sum is 31.

The square root of 42515554 is about 6520.3952334195. The cubic root of 42515554 is about 349.0191695614.

The spelling of 42515554 in words is "forty-two million, five hundred fifteen thousand, five hundred fifty-four".