42333131 has 4 divisors (see below), whose sum is σ = 42466992. Its totient is φ = 42199272.

The previous prime is 42333101. The next prime is 42333139. The reversal of 42333131 is 13133324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42333131 - 2²² = 38138827 is a prime.

It is a super-2 number, since 2×42333131² = 3584187960526322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42333139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66455 + ... + 67088.

It is an arithmetic number, because the mean of its divisors is an integer number (10616748).

Almost surely, 2^42333131 is an apocalyptic number.

42333131 is a deficient number, since it is larger than the sum of its proper divisors (133861).

42333131 is a wasteful number, since it uses less digits than its factorization.

42333131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133860.

The product of its digits is 648, while the sum is 20.

The square root of 42333131 is about 6506.3915498531. The cubic root of 42333131 is about 348.5192709116.

Adding to 42333131 its reverse (13133324), we get a palindrome (55466455).

The spelling of 42333131 in words is "forty-two million, three hundred thirty-three thousand, one hundred thirty-one".