42634405 has 16 divisors (see below), whose sum is σ = 57003264. Its totient is φ = 30345280.

The previous prime is 42634391. The next prime is 42634439. The reversal of 42634405 is 50443624.

It is not a de Polignac number, because 42634405 - 2⁵ = 42634373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662 + ... + 10831.

It is an arithmetic number, because the mean of its divisors is an integer number (3562704).

Almost surely, 2^42634405 is an apocalyptic number.

It is an amenable number.

42634405 is a deficient number, since it is larger than the sum of its proper divisors (14368859).

42634405 is a wasteful number, since it uses less digits than its factorization.

42634405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16556.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 42634405 is about 6529.5026609995. The cubic root of 42634405 is about 349.3440913066.

It can be divided in two parts, 4263 and 4405, that added together give a palindrome (8668).

The spelling of 42634405 in words is "forty-two million, six hundred thirty-four thousand, four hundred five".