42355567 has 4 divisors (see below), whose sum is σ = 42400336. Its totient is φ = 42310800.

The previous prime is 42355561. The next prime is 42355589. The reversal of 42355567 is 76555324.

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 42355567 - 2¹⁵ = 42322799 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 (42355561) 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, 20934 + ... + 22867.

It is an arithmetic number, because the mean of its divisors is an integer number (10600084).

Almost surely, 2^42355567 is an apocalyptic number.

42355567 is a deficient number, since it is larger than the sum of its proper divisors (44769).

42355567 is an equidigital number, since it uses as much as digits as its factorization.

42355567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44768.

The product of its digits is 126000, while the sum is 37.

The square root of 42355567 is about 6508.1154722393. The cubic root of 42355567 is about 348.5808302403.

The spelling of 42355567 in words is "forty-two million, three hundred fifty-five thousand, five hundred sixty-seven".