42638599 has 8 divisors (see below), whose sum is σ = 43624448. Its totient is φ = 41663160.

The previous prime is 42638597. The next prime is 42638611. The reversal of 42638599 is 99583624.

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 42638599 - 2¹ = 42638597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42638593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6004 + ... + 11014.

It is an arithmetic number, because the mean of its divisors is an integer number (5453056).

Almost surely, 2^42638599 is an apocalyptic number.

42638599 is a deficient number, since it is larger than the sum of its proper divisors (985849).

42638599 is a wasteful number, since it uses less digits than its factorization.

42638599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205.

The product of its digits is 466560, while the sum is 46.

The square root of 42638599 is about 6529.8238107931. The cubic root of 42638599 is about 349.3555460701.

The spelling of 42638599 in words is "forty-two million, six hundred thirty-eight thousand, five hundred ninety-nine".