42269921 has 4 divisors (see below), whose sum is σ = 42865344. Its totient is φ = 41674500.

The previous prime is 42269917. The next prime is 42269933. The reversal of 42269921 is 12996224.

42269921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42269921 - 2² = 42269917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42269951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297605 + ... + 297746.

It is an arithmetic number, because the mean of its divisors is an integer number (10716336).

Almost surely, 2^42269921 is an apocalyptic number.

It is an amenable number.

42269921 is a deficient number, since it is larger than the sum of its proper divisors (595423).

42269921 is an equidigital number, since it uses as much as digits as its factorization.

42269921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595422.

The product of its digits is 15552, while the sum is 35.

The square root of 42269921 is about 6501.5322040270. The cubic root of 42269921 is about 348.3457198702.

The spelling of 42269921 in words is "forty-two million, two hundred sixty-nine thousand, nine hundred twenty-one".