42455433 has 4 divisors (see below), whose sum is σ = 56607248. Its totient is φ = 28303620.

The previous prime is 42455423. The next prime is 42455471. The reversal of 42455433 is 33455424.

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 de Polignac number, because none of the positive numbers 2^k-42455433 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 42455433.

It is not an unprimeable number, because it can be changed into a prime (42455423) 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, 7075903 + ... + 7075908.

It is an arithmetic number, because the mean of its divisors is an integer number (14151812).

Almost surely, 2^42455433 is an apocalyptic number.

It is an amenable number.

42455433 is a deficient number, since it is larger than the sum of its proper divisors (14151815).

42455433 is a wasteful number, since it uses less digits than its factorization.

42455433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151814.

The product of its digits is 28800, while the sum is 30.

The square root of 42455433 is about 6515.7833757730. The cubic root of 42455433 is about 348.8545766213.

Subtracting from 42455433 its reverse (33455424), we obtain a palindrome (9000009).

The spelling of 42455433 in words is "forty-two million, four hundred fifty-five thousand, four hundred thirty-three".