42815602 has 4 divisors (see below), whose sum is σ = 64223406. Its totient is φ = 21407800.

The previous prime is 42815599. The next prime is 42815621. The reversal of 42815602 is 20651824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33396841 + 9418761 = 5779^2 + 3069^2 .

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 as a sum of consecutive naturals, namely, 10703899 + ... + 10703902.

Almost surely, 2^42815602 is an apocalyptic number.

42815602 is a deficient number, since it is larger than the sum of its proper divisors (21407804).

42815602 is a wasteful number, since it uses less digits than its factorization.

42815602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21407803.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 42815602 is about 6543.3632025129. The cubic root of 42815602 is about 349.8382980935.

The spelling of 42815602 in words is "forty-two million, eight hundred fifteen thousand, six hundred two".