42356122 has 4 divisors (see below), whose sum is σ = 63534186. Its totient is φ = 21178060.

The previous prime is 42356113. The next prime is 42356123. The reversal of 42356122 is 22165324.

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., 42107121 + 249001 = 6489^2 + 499^2 .

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (42356123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10589029 + ... + 10589032.

Almost surely, 2^42356122 is an apocalyptic number.

42356122 is a deficient number, since it is larger than the sum of its proper divisors (21178064).

42356122 is a wasteful number, since it uses less digits than its factorization.

42356122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21178063.

The product of its digits is 2880, while the sum is 25.

The square root of 42356122 is about 6508.1581111709. The cubic root of 42356122 is about 348.5823527597.

The spelling of 42356122 in words is "forty-two million, three hundred fifty-six thousand, one hundred twenty-two".