42131233 has 4 divisors (see below), whose sum is σ = 42246400. Its totient is φ = 42016068.

The previous prime is 42131183. The next prime is 42131267. The reversal of 42131233 is 33213124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42131233 - 2¹³ = 42123041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42131233.

It is not an unprimeable number, because it can be changed into a prime (42131273) 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, 57033 + ... + 57766.

It is an arithmetic number, because the mean of its divisors is an integer number (10561600).

Almost surely, 2^42131233 is an apocalyptic number.

It is an amenable number.

42131233 is a deficient number, since it is larger than the sum of its proper divisors (115167).

42131233 is a wasteful number, since it uses less digits than its factorization.

42131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115166.

The product of its digits is 432, while the sum is 19.

The square root of 42131233 is about 6490.8576474916. The cubic root of 42131233 is about 347.9643272766.

Adding to 42131233 its reverse (33213124), we get a palindrome (75344357).

The spelling of 42131233 in words is "forty-two million, one hundred thirty-one thousand, two hundred thirty-three".