42602405 has 4 divisors (see below), whose sum is σ = 51122892. Its totient is φ = 34081920.

The previous prime is 42602387. The next prime is 42602411. The reversal of 42602405 is 50420624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15499969 + 27102436 = 3937^2 + 5206^2 .

It is not a de Polignac number, because 42602405 - 2⁸ = 42602149 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, 4260236 + ... + 4260245.

It is an arithmetic number, because the mean of its divisors is an integer number (12780723).

Almost surely, 2^42602405 is an apocalyptic number.

It is an amenable number.

42602405 is a deficient number, since it is larger than the sum of its proper divisors (8520487).

42602405 is an equidigital number, since it uses as much as digits as its factorization.

42602405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520486.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42602405 is about 6527.0517846881. The cubic root of 42602405 is about 349.2566673199.

The spelling of 42602405 in words is "forty-two million, six hundred two thousand, four hundred five".