42989615 has 8 divisors (see below), whose sum is σ = 51982128. Its totient is φ = 34128640.

The previous prime is 42989603. The next prime is 42989621. The reversal of 42989615 is 51698924.

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

It is not a de Polignac number, because 42989615 - 2¹² = 42985519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32162 + ... + 33471.

It is an arithmetic number, because the mean of its divisors is an integer number (6497766).

Almost surely, 2^42989615 is an apocalyptic number.

42989615 is a deficient number, since it is larger than the sum of its proper divisors (8992513).

42989615 is a wasteful number, since it uses less digits than its factorization.

42989615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65769.

The product of its digits is 155520, while the sum is 44.

The square root of 42989615 is about 6556.6466276596. The cubic root of 42989615 is about 350.3116000556.

The spelling of 42989615 in words is "forty-two million, nine hundred eighty-nine thousand, six hundred fifteen".