42164422 has 4 divisors (see below), whose sum is σ = 63246636. Its totient is φ = 21082210.

The previous prime is 42164411. The next prime is 42164431. The reversal of 42164422 is 22446124.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10541104 + ... + 10541107.

It is an arithmetic number, because the mean of its divisors is an integer number (15811659).

Almost surely, 2^42164422 is an apocalyptic number.

42164422 is a deficient number, since it is larger than the sum of its proper divisors (21082214).

42164422 is a wasteful number, since it uses less digits than its factorization.

42164422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21082213.

The product of its digits is 3072, while the sum is 25.

The square root of 42164422 is about 6493.4137400908. The cubic root of 42164422 is about 348.0556732614.

The spelling of 42164422 in words is "forty-two million, one hundred sixty-four thousand, four hundred twenty-two".