142015817 has 2 divisors, whose sum is σ = 142015818. Its totient is φ = 142015816.

The previous prime is 142015751. The next prime is 142015829. The reversal of 142015817 is 718510241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135745801 + 6270016 = 11651^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 142015817 - 2⁸ = 142015561 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142015817.

It is not a weakly prime, because it can be changed into another prime (142015837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71007908 + 71007909.

It is an arithmetic number, because the mean of its divisors is an integer number (71007909).

Almost surely, 2^142015817 is an apocalyptic number.

It is an amenable number.

142015817 is a deficient number, since it is larger than the sum of its proper divisors (1).

142015817 is an equidigital number, since it uses as much as digits as its factorization.

142015817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 142015817 is about 11917.0389359102. The cubic root of 142015817 is about 521.7297145482.

The spelling of 142015817 in words is "one hundred forty-two million, fifteen thousand, eight hundred seventeen".