42164330 has 16 divisors (see below), whose sum is σ = 81734184. Its totient is φ = 15568320.

The previous prime is 42164329. The next prime is 42164333. The reversal of 42164330 is 3346124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25411681 + 16752649 = 5041^2 + 4093^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42164296 and 42164305.

It is not an unprimeable number, because it can be changed into a prime (42164333) 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, 162041 + ... + 162300.

Almost surely, 2^42164330 is an apocalyptic number.

42164330 is a deficient number, since it is larger than the sum of its proper divisors (39569854).

42164330 is a wasteful number, since it uses less digits than its factorization.

42164330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324361.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 42164330 is about 6493.4066559857. The cubic root of 42164330 is about 348.0554201163.

The spelling of 42164330 in words is "forty-two million, one hundred sixty-four thousand, three hundred thirty".