42213511 has 2 divisors, whose sum is σ = 42213512. Its totient is φ = 42213510.

The previous prime is 42213503. The next prime is 42213517. The reversal of 42213511 is 11531224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42213511 - 2³ = 42213503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42213517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106755 + 21106756.

It is an arithmetic number, because the mean of its divisors is an integer number (21106756).

Almost surely, 2^42213511 is an apocalyptic number.

42213511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42213511 is an equidigital number, since it uses as much as digits as its factorization.

42213511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 42213511 is about 6497.1925475547. The cubic root of 42213511 is about 348.1906929286.

Adding to 42213511 its reverse (11531224), we get a palindrome (53744735).

It can be divided in two parts, 42213 and 511, that added together give a palindrome (42724).

The spelling of 42213511 in words is "forty-two million, two hundred thirteen thousand, five hundred eleven".