42162122 has 4 divisors (see below), whose sum is σ = 63243186. Its totient is φ = 21081060.

The previous prime is 42162119. The next prime is 42162179. The reversal of 42162122 is 22126124.

It is a happy number.

42162122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 40309801 + 1852321 = 6349^2 + 1361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42162094 and 42162103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10540529 + ... + 10540532.

Almost surely, 2^42162122 is an apocalyptic number.

42162122 is a deficient number, since it is larger than the sum of its proper divisors (21081064).

42162122 is a wasteful number, since it uses less digits than its factorization.

42162122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21081063.

The product of its digits is 384, while the sum is 20.

The square root of 42162122 is about 6493.2366351458. The cubic root of 42162122 is about 348.0493445244.

Adding to 42162122 its reverse (22126124), we get a palindrome (64288246).

The spelling of 42162122 in words is "forty-two million, one hundred sixty-two thousand, one hundred twenty-two".