42212299 has 2 divisors, whose sum is σ = 42212300. Its totient is φ = 42212298.

The previous prime is 42212293. The next prime is 42212333. The reversal of 42212299 is 99221224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42212299 - 2⁵ = 42212267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42212299.

It is not a weakly prime, because it can be changed into another prime (42212293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106149 + 21106150.

It is an arithmetic number, because the mean of its divisors is an integer number (21106150).

Almost surely, 2^42212299 is an apocalyptic number.

42212299 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212299 is an equidigital number, since it uses as much as digits as its factorization.

42212299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 42212299 is about 6497.0992758307. The cubic root of 42212299 is about 348.1873605740.

It can be divided in two parts, 4221 and 2299, that multiplied together give a palindrome (9704079).

The spelling of 42212299 in words is "forty-two million, two hundred twelve thousand, two hundred ninety-nine".