42522331 has 8 divisors (see below), whose sum is σ = 44871840. Its totient is φ = 40214592.

The previous prime is 42522329. The next prime is 42522343. The reversal of 42522331 is 13322524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42522331 - 2¹ = 42522329 is a prime.

It is a super-2 number, since 2×42522331² = 3616297267347122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42522301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8340 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (5608980).

Almost surely, 2^42522331 is an apocalyptic number.

42522331 is a deficient number, since it is larger than the sum of its proper divisors (2349509).

42522331 is a wasteful number, since it uses less digits than its factorization.

42522331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20885.

The product of its digits is 1440, while the sum is 22.

The square root of 42522331 is about 6520.9148897988. The cubic root of 42522331 is about 349.0377131847.

Adding to 42522331 its reverse (13322524), we get a palindrome (55844855).

The spelling of 42522331 in words is "forty-two million, five hundred twenty-two thousand, three hundred thirty-one".