42522386 has 4 divisors (see below), whose sum is σ = 63783582. Its totient is φ = 21261192.

The previous prime is 42522367. The next prime is 42522391. The reversal of 42522386 is 68322524.

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., 39300361 + 3222025 = 6269^2 + 1795^2 .

It is a super-2 number, since 2×42522386² = 3616306622265992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630595 + ... + 10630598.

Almost surely, 2^42522386 is an apocalyptic number.

42522386 is a deficient number, since it is larger than the sum of its proper divisors (21261196).

42522386 is a wasteful number, since it uses less digits than its factorization.

42522386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21261195.

The product of its digits is 23040, while the sum is 32.

The square root of 42522386 is about 6520.9191069971. The cubic root of 42522386 is about 349.0378636708.

The spelling of 42522386 in words is "forty-two million, five hundred twenty-two thousand, three hundred eighty-six".