42628369 has 4 divisors (see below), whose sum is σ = 48718144. Its totient is φ = 36538596.

The previous prime is 42628337. The next prime is 42628393. The reversal of 42628369 is 96382624.

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 42628369 - 2⁵ = 42628337 is a prime.

It is a super-2 number, since 2×42628369² = 3634355687200322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42628319) 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 3 ways as a sum of consecutive naturals, for example, 3044877 + ... + 3044890.

It is an arithmetic number, because the mean of its divisors is an integer number (12179536).

Almost surely, 2^42628369 is an apocalyptic number.

It is an amenable number.

42628369 is a deficient number, since it is larger than the sum of its proper divisors (6089775).

42628369 is an equidigital number, since it uses as much as digits as its factorization.

42628369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089774.

The product of its digits is 124416, while the sum is 40.

The square root of 42628369 is about 6529.0404348572. The cubic root of 42628369 is about 349.3276043054.

The spelling of 42628369 in words is "forty-two million, six hundred twenty-eight thousand, three hundred sixty-nine".