42522121 has 8 divisors (see below), whose sum is σ = 43156800. Its totient is φ = 41892048.

The previous prime is 42522107. The next prime is 42522127. The reversal of 42522121 is 12122524.

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 42522121 - 2⁵ = 42522089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42522127) 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, 20295 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (5394600).

Almost surely, 2^42522121 is an apocalyptic number.

It is an amenable number.

42522121 is a deficient number, since it is larger than the sum of its proper divisors (634679).

42522121 is a wasteful number, since it uses less digits than its factorization.

42522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303.

The product of its digits is 320, while the sum is 19.

The square root of 42522121 is about 6520.8987877439. The cubic root of 42522121 is about 349.0371386000.

Adding to 42522121 its reverse (12122524), we get a palindrome (54644645).

The spelling of 42522121 in words is "forty-two million, five hundred twenty-two thousand, one hundred twenty-one".