42038915 has 8 divisors (see below), whose sum is σ = 51520320. Its totient is φ = 32915392.

The previous prime is 42038903. The next prime is 42038921. The reversal of 42038915 is 51983024.

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

It is a cyclic number.

It is not a de Polignac number, because 42038915 - 2¹² = 42034819 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 89210 + ... + 89679.

It is an arithmetic number, because the mean of its divisors is an integer number (6440040).

Almost surely, 2^42038915 is an apocalyptic number.

42038915 is a deficient number, since it is larger than the sum of its proper divisors (9481405).

42038915 is a wasteful number, since it uses less digits than its factorization.

42038915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178941.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 42038915 is about 6483.7423607050. The cubic root of 42038915 is about 347.7099881557.

The spelling of 42038915 in words is "forty-two million, thirty-eight thousand, nine hundred fifteen".