42213133 has 2 divisors, whose sum is σ = 42213134. Its totient is φ = 42213132.

The previous prime is 42213109. The next prime is 42213137. The reversal of 42213133 is 33131224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23011209 + 19201924 = 4797^2 + 4382^2 .

It is a cyclic number.

It is not a de Polignac number, because 42213133 - 2²¹ = 40115981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42213133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42213137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106566 + 21106567.

It is an arithmetic number, because the mean of its divisors is an integer number (21106567).

Almost surely, 2^42213133 is an apocalyptic number.

It is an amenable number.

42213133 is a deficient number, since it is larger than the sum of its proper divisors (1).

42213133 is an equidigital number, since it uses as much as digits as its factorization.

42213133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 42213133 is about 6497.1634580023. The cubic root of 42213133 is about 348.1896536367.

Adding to 42213133 its reverse (33131224), we get a palindrome (75344357).

The spelling of 42213133 in words is "forty-two million, two hundred thirteen thousand, one hundred thirty-three".