42215351 has 2 divisors, whose sum is σ = 42215352. Its totient is φ = 42215350.

The previous prime is 42215339. The next prime is 42215357. The reversal of 42215351 is 15351224.

42215351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42215351 - 2¹⁸ = 41953207 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 (42215357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107675 + 21107676.

It is an arithmetic number, because the mean of its divisors is an integer number (21107676).

Almost surely, 2^42215351 is an apocalyptic number.

42215351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42215351 is an equidigital number, since it uses as much as digits as its factorization.

42215351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 42215351 is about 6497.3341456323. The cubic root of 42215351 is about 348.1957518268.

Adding to 42215351 its reverse (15351224), we get a palindrome (57566575).

The spelling of 42215351 in words is "forty-two million, two hundred fifteen thousand, three hundred fifty-one".