42033231 has 24 divisors (see below), whose sum is σ = 65791440. Its totient is φ = 25756416.

The previous prime is 42033223. The next prime is 42033239. The reversal of 42033231 is 13233024.

It is an interprime number because it is at equal distance from previous prime (42033223) and next prime (42033239).

It is not a de Polignac number, because 42033231 - 2³ = 42033223 is a prime.

It is a super-2 number, since 2×42033231² = 3533585016598722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42033239) 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, 3385 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (2741310).

Almost surely, 2^42033231 is an apocalyptic number.

42033231 is a deficient number, since it is larger than the sum of its proper divisors (23758209).

42033231 is a wasteful number, since it uses less digits than its factorization.

42033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455 (or 6452 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42033231 is about 6483.3040187855. The cubic root of 42033231 is about 347.6943163854.

Adding to 42033231 its reverse (13233024), we get a palindrome (55266255).

The spelling of 42033231 in words is "forty-two million, thirty-three thousand, two hundred thirty-one".