42213911 has 4 divisors (see below), whose sum is σ = 42546432. Its totient is φ = 41881392.

The previous prime is 42213889. The next prime is 42213923. The reversal of 42213911 is 11931224.

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 42213911 - 2²² = 38019607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42213931) 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, 166070 + ... + 166323.

It is an arithmetic number, because the mean of its divisors is an integer number (10636608).

Almost surely, 2^42213911 is an apocalyptic number.

42213911 is a deficient number, since it is larger than the sum of its proper divisors (332521).

42213911 is a wasteful number, since it uses less digits than its factorization.

42213911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332520.

The product of its digits is 432, while the sum is 23.

The square root of 42213911 is about 6497.2233300080. The cubic root of 42213911 is about 348.1917927016.

The spelling of 42213911 in words is "forty-two million, two hundred thirteen thousand, nine hundred eleven".