42321433 has 16 divisors (see below), whose sum is σ = 52945920. Its totient is φ = 32864400.

The previous prime is 42321427. The next prime is 42321439. The reversal of 42321433 is 33412324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42321427) and next prime (42321439).

It is a cyclic number.

It is not a de Polignac number, because 42321433 - 2²⁵ = 8767001 is a prime.

It is a super-2 number, since 2×42321433² = 3582207382346978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42321439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26878 + ... + 28408.

It is an arithmetic number, because the mean of its divisors is an integer number (3309120).

Almost surely, 2^42321433 is an apocalyptic number.

It is an amenable number.

42321433 is a deficient number, since it is larger than the sum of its proper divisors (10624487).

42321433 is a wasteful number, since it uses less digits than its factorization.

42321433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908.

The product of its digits is 1728, while the sum is 22.

The square root of 42321433 is about 6505.4925255510. The cubic root of 42321433 is about 348.4871656084.

Adding to 42321433 its reverse (33412324), we get a palindrome (75733757).

It can be divided in two parts, 4232 and 1433, that added together give a palindrome (5665).

The spelling of 42321433 in words is "forty-two million, three hundred twenty-one thousand, four hundred thirty-three".