42212351 has 2 divisors, whose sum is σ = 42212352. Its totient is φ = 42212350.

The previous prime is 42212347. The next prime is 42212399. The reversal of 42212351 is 15321224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42212351 - 2² = 42212347 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42212551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106175 + 21106176.

It is an arithmetic number, because the mean of its divisors is an integer number (21106176).

Almost surely, 2^42212351 is an apocalyptic number.

42212351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212351 is an equidigital number, since it uses as much as digits as its factorization.

42212351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 20.

The square root of 42212351 is about 6497.1032776153. The cubic root of 42212351 is about 348.1875035476.

Adding to 42212351 its reverse (15321224), we get a palindrome (57533575).

The spelling of 42212351 in words is "forty-two million, two hundred twelve thousand, three hundred fifty-one".