4042605 has 16 divisors (see below), whose sum is σ = 7392384. Its totient is φ = 1848000.

The previous prime is 4042603. The next prime is 4042607. The reversal of 4042605 is 5062404.

It is a happy number.

4042605 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (4042603) and next prime (4042607).

It is not a de Polignac number, because 4042605 - 2¹ = 4042603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19146 + ... + 19355.

It is an arithmetic number, because the mean of its divisors is an integer number (462024).

Almost surely, 2^4042605 is an apocalyptic number.

It is an amenable number.

4042605 is a deficient number, since it is larger than the sum of its proper divisors (3349779).

4042605 is a wasteful number, since it uses less digits than its factorization.

4042605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38516.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4042605 is about 2010.6230377671. The cubic root of 4042605 is about 159.3017094773.

The spelling of 4042605 in words is "four million, forty-two thousand, six hundred five".