42655799 has 4 divisors (see below), whose sum is σ = 42684720. Its totient is φ = 42626880.

The previous prime is 42655787. The next prime is 42655807. The reversal of 42655799 is 99755624.

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

It is a cyclic number.

It is not a de Polignac number, because 42655799 - 2¹² = 42651703 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 (42655729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12122 + ... + 15239.

It is an arithmetic number, because the mean of its divisors is an integer number (10671180).

Almost surely, 2^42655799 is an apocalyptic number.

42655799 is a deficient number, since it is larger than the sum of its proper divisors (28921).

42655799 is a wasteful number, since it uses less digits than its factorization.

42655799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28920.

The product of its digits is 680400, while the sum is 47.

The square root of 42655799 is about 6531.1407120043. The cubic root of 42655799 is about 349.4025153087.

The spelling of 42655799 in words is "forty-two million, six hundred fifty-five thousand, seven hundred ninety-nine".