42021267 has 4 divisors (see below), whose sum is σ = 56028360. Its totient is φ = 28014176.

The previous prime is 42021257. The next prime is 42021313. The reversal of 42021267 is 76212024.

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 42021267 - 2⁴ = 42021251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42021227) 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, 7003542 + ... + 7003547.

It is an arithmetic number, because the mean of its divisors is an integer number (14007090).

Almost surely, 2^42021267 is an apocalyptic number.

42021267 is a deficient number, since it is larger than the sum of its proper divisors (14007093).

42021267 is a wasteful number, since it uses less digits than its factorization.

42021267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007092.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 42021267 is about 6482.3812754265. The cubic root of 42021267 is about 347.6613249527.

The spelling of 42021267 in words is "forty-two million, twenty-one thousand, two hundred sixty-seven".