42211999 has 4 divisors (see below), whose sum is σ = 42534360. Its totient is φ = 41889640.

The previous prime is 42211927. The next prime is 42212011. The reversal of 42211999 is 99911224.

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 42211999 - 2¹⁵ = 42179231 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 (42212999) 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, 160984 + ... + 161245.

It is an arithmetic number, because the mean of its divisors is an integer number (10633590).

Almost surely, 2^42211999 is an apocalyptic number.

42211999 is a deficient number, since it is larger than the sum of its proper divisors (322361).

42211999 is a wasteful number, since it uses less digits than its factorization.

42211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322360.

The product of its digits is 11664, while the sum is 37.

The square root of 42211999 is about 6497.0761885636. The cubic root of 42211999 is about 348.1865357239.

It can be divided in two parts, 422 and 11999, that added together give a palindrome (12421).

The spelling of 42211999 in words is "forty-two million, two hundred eleven thousand, nine hundred ninety-nine".