42715513 has 2 divisors, whose sum is σ = 42715514. Its totient is φ = 42715512.

The previous prime is 42715511. The next prime is 42715523. The reversal of 42715513 is 31551724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36324729 + 6390784 = 6027^2 + 2528^2 .

It is a cyclic number.

It is not a de Polignac number, because 42715513 - 2¹ = 42715511 is a prime.

Together with 42715511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42715511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21357756 + 21357757.

It is an arithmetic number, because the mean of its divisors is an integer number (21357757).

Almost surely, 2^42715513 is an apocalyptic number.

It is an amenable number.

42715513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42715513 is an equidigital number, since it uses as much as digits as its factorization.

42715513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 42715513 is about 6535.7105964080. The cubic root of 42715513 is about 349.5654825479.

The spelling of 42715513 in words is "forty-two million, seven hundred fifteen thousand, five hundred thirteen".