42164434 has 16 divisors (see below), whose sum is σ = 70461720. Its totient is φ = 18789120.

The previous prime is 42164431. The next prime is 42164483. The reversal of 42164434 is 43446124.

It can be written as a sum of positive squares in 4 ways, for example, as 39652209 + 2512225 = 6297^2 + 1585^2 .

It is not an unprimeable number, because it can be changed into a prime (42164431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27207 + ... + 28714.

Almost surely, 2^42164434 is an apocalyptic number.

42164434 is a deficient number, since it is larger than the sum of its proper divisors (28297286).

42164434 is a wasteful number, since it uses less digits than its factorization.

42164434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55965.

The product of its digits is 9216, while the sum is 28.

The square root of 42164434 is about 6493.4146641039. The cubic root of 42164434 is about 348.0557062803.

The spelling of 42164434 in words is "forty-two million, one hundred sixty-four thousand, four hundred thirty-four".