42606605 has 4 divisors (see below), whose sum is σ = 51127932. Its totient is φ = 34085280.

The previous prime is 42606587. The next prime is 42606623. The reversal of 42606605 is 50660624.

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

It is an interprime number because it is at equal distance from previous prime (42606587) and next prime (42606623).

It can be written as a sum of positive squares in 2 ways, for example, as 21104836 + 21501769 = 4594^2 + 4637^2 .

It is not a de Polignac number, because 42606605 - 2¹⁴ = 42590221 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 3 ways as a sum of consecutive naturals, for example, 4260656 + ... + 4260665.

It is an arithmetic number, because the mean of its divisors is an integer number (12781983).

Almost surely, 2^42606605 is an apocalyptic number.

It is an amenable number.

42606605 is a deficient number, since it is larger than the sum of its proper divisors (8521327).

42606605 is an equidigital number, since it uses as much as digits as its factorization.

42606605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521326.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 42606605 is about 6527.3735146688. The cubic root of 42606605 is about 349.2681442135.

The spelling of 42606605 in words is "forty-two million, six hundred six thousand, six hundred five".