42203291 has 4 divisors (see below), whose sum is σ = 45449712. Its totient is φ = 38956872.

The previous prime is 42203279. The next prime is 42203297. The reversal of 42203291 is 19230224.

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 42203291 - 2¹⁰ = 42202267 is a prime.

It is a super-2 number, since 2×42203291² = 3562235542461362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42203297) 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, 1623191 + ... + 1623216.

It is an arithmetic number, because the mean of its divisors is an integer number (11362428).

Almost surely, 2^42203291 is an apocalyptic number.

42203291 is a deficient number, since it is larger than the sum of its proper divisors (3246421).

42203291 is a wasteful number, since it uses less digits than its factorization.

42203291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246420.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42203291 is about 6496.4060064008. The cubic root of 42203291 is about 348.1625913721.

The spelling of 42203291 in words is "forty-two million, two hundred three thousand, two hundred ninety-one".