42031433 has 4 divisors (see below), whose sum is σ = 42083328. Its totient is φ = 41979540.

The previous prime is 42031417. The next prime is 42031441. The reversal of 42031433 is 33413024.

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 42031433 - 2⁴ = 42031417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42031403) 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, 24713 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (10520832).

Almost surely, 2^42031433 is an apocalyptic number.

It is an amenable number.

42031433 is a deficient number, since it is larger than the sum of its proper divisors (51895).

42031433 is an equidigital number, since it uses as much as digits as its factorization.

42031433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51894.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 42031433 is about 6483.1653534365. The cubic root of 42031433 is about 347.6893586946.

Adding to 42031433 its reverse (33413024), we get a palindrome (75444457).

The spelling of 42031433 in words is "forty-two million, thirty-one thousand, four hundred thirty-three".