42233121 has 24 divisors (see below), whose sum is σ = 70447104. Its totient is φ = 23880960.

The previous prime is 42233101. The next prime is 42233141. The reversal of 42233121 is 12133224.

It is an interprime number because it is at equal distance from previous prime (42233101) and next prime (42233141).

It is not a de Polignac number, because 42233121 - 2⁵ = 42233089 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42233094 and 42233103.

It is not an unprimeable number, because it can be changed into a prime (42233101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2656 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (2935296).

Almost surely, 2^42233121 is an apocalyptic number.

It is an amenable number.

42233121 is a deficient number, since it is larger than the sum of its proper divisors (28213983).

42233121 is a wasteful number, since it uses less digits than its factorization.

42233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021 (or 7018 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 42233121 is about 6498.7014856816. The cubic root of 42233121 is about 348.2446011229.

Adding to 42233121 its reverse (12133224), we get a palindrome (54366345).

The spelling of 42233121 in words is "forty-two million, two hundred thirty-three thousand, one hundred twenty-one".