42213587 has 4 divisors (see below), whose sum is σ = 45460800. Its totient is φ = 38966376.

The previous prime is 42213583. The next prime is 42213643. The reversal of 42213587 is 78531224.

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 42213587 - 2² = 42213583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42213583) 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, 1623587 + ... + 1623612.

It is an arithmetic number, because the mean of its divisors is an integer number (11365200).

Almost surely, 2^42213587 is an apocalyptic number.

42213587 is a deficient number, since it is larger than the sum of its proper divisors (3247213).

42213587 is a wasteful number, since it uses less digits than its factorization.

42213587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247212.

The product of its digits is 13440, while the sum is 32.

The square root of 42213587 is about 6497.1983962320. The cubic root of 42213587 is about 348.1909018860.

The spelling of 42213587 in words is "forty-two million, two hundred thirteen thousand, five hundred eighty-seven".