42164122 has 32 divisors (see below), whose sum is σ = 84921984. Its totient is φ = 15163200.

The previous prime is 42164119. The next prime is 42164137. The reversal of 42164122 is 22146124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 42164093 and 42164102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8529 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (2653812).

Almost surely, 2^42164122 is an apocalyptic number.

42164122 is an abundant number, since it is smaller than the sum of its proper divisors (42757862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42164122 is a wasteful number, since it uses less digits than its factorization.

42164122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21094.

The product of its digits is 768, while the sum is 22.

The square root of 42164122 is about 6493.3906397197. The cubic root of 42164122 is about 348.0548477870.

It can be divided in two parts, 4216 and 4122, that added together give a palindrome (8338).

The spelling of 42164122 in words is "forty-two million, one hundred sixty-four thousand, one hundred twenty-two".