42215713 has 2 divisors, whose sum is σ = 42215714. Its totient is φ = 42215712.

The previous prime is 42215699. The next prime is 42215731. The reversal of 42215713 is 31751224.

It is a happy number.

Together with next prime (42215731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41835024 + 380689 = 6468^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 42215713 - 2²⁵ = 8661281 is a prime.

It is not a weakly prime, because it can be changed into another prime (42215413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107856 + 21107857.

It is an arithmetic number, because the mean of its divisors is an integer number (21107857).

Almost surely, 2^42215713 is an apocalyptic number.

It is an amenable number.

42215713 is a deficient number, since it is larger than the sum of its proper divisors (1).

42215713 is an equidigital number, since it uses as much as digits as its factorization.

42215713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 42215713 is about 6497.3620031517. The cubic root of 42215713 is about 348.1967470927.

Adding to 42215713 its reverse (31751224), we get a palindrome (73966937).

The spelling of 42215713 in words is "forty-two million, two hundred fifteen thousand, seven hundred thirteen".