42213503 has 2 divisors, whose sum is σ = 42213504. Its totient is φ = 42213502.

The previous prime is 42213481. The next prime is 42213511. The reversal of 42213503 is 30531224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42213503 - 2²² = 38019199 is a prime.

It is a super-3 number, since 3×42213503³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42213553) 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, 21106751 + 21106752.

It is an arithmetic number, because the mean of its divisors is an integer number (21106752).

Almost surely, 2^42213503 is an apocalyptic number.

42213503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42213503 is an equidigital number, since it uses as much as digits as its factorization.

42213503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42213503 is about 6497.1919319041. The cubic root of 42213503 is about 348.1906709330.

Adding to 42213503 its reverse (30531224), we get a palindrome (72744727).

The spelling of 42213503 in words is "forty-two million, two hundred thirteen thousand, five hundred three".