42203491 has 4 divisors (see below), whose sum is σ = 46040184. Its totient is φ = 38366800.

The previous prime is 42203479. The next prime is 42203527. The reversal of 42203491 is 19430224.

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 42203491 - 2⁷ = 42203363 is a prime.

It is a super-2 number, since 2×42203491² = 3562269305174162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42203411) 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, 1918330 + ... + 1918351.

It is an arithmetic number, because the mean of its divisors is an integer number (11510046).

Almost surely, 2^42203491 is an apocalyptic number.

42203491 is a deficient number, since it is larger than the sum of its proper divisors (3836693).

42203491 is a wasteful number, since it uses less digits than its factorization.

42203491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836692.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 42203491 is about 6496.4213995091. The cubic root of 42203491 is about 348.1631413482.

The spelling of 42203491 in words is "forty-two million, two hundred three thousand, four hundred ninety-one".