42215699 has 2 divisors, whose sum is σ = 42215700. Its totient is φ = 42215698.

The previous prime is 42215687. The next prime is 42215713. The reversal of 42215699 is 99651224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42215699 - 2⁸ = 42215443 is a prime.

It is equal to p_2559935 and since 42215699 and 2559935 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42215629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107849 + 21107850.

It is an arithmetic number, because the mean of its divisors is an integer number (21107850).

Almost surely, 2^42215699 is an apocalyptic number.

42215699 is a deficient number, since it is larger than the sum of its proper divisors (1).

42215699 is an equidigital number, since it uses as much as digits as its factorization.

42215699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 42215699 is about 6497.3609257913. The cubic root of 42215699 is about 348.1967086019.

The spelling of 42215699 in words is "forty-two million, two hundred fifteen thousand, six hundred ninety-nine".