42633623 has 4 divisors (see below), whose sum is σ = 42810768. Its totient is φ = 42456480.

The previous prime is 42633607. The next prime is 42633629. The reversal of 42633623 is 32633624.

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 42633623 - 2⁴ = 42633607 is a prime.

It is a super-2 number, since 2×42633623² = 3635251620212258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42633629) 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, 88211 + ... + 88692.

It is an arithmetic number, because the mean of its divisors is an integer number (10702692).

Almost surely, 2^42633623 is an apocalyptic number.

42633623 is a deficient number, since it is larger than the sum of its proper divisors (177145).

42633623 is a wasteful number, since it uses less digits than its factorization.

42633623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177144.

The product of its digits is 15552, while the sum is 29.

The square root of 42633623 is about 6529.4427786757. The cubic root of 42633623 is about 349.3419554044.

Subtracting from 42633623 its reverse (32633624), we obtain a palindrome (9999999).

The spelling of 42633623 in words is "forty-two million, six hundred thirty-three thousand, six hundred twenty-three".