142693613 has 2 divisors, whose sum is σ = 142693614. Its totient is φ = 142693612.

The previous prime is 142693567. The next prime is 142693669. The reversal of 142693613 is 316396241.

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., 139877929 + 2815684 = 11827^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 142693613 - 2⁶ = 142693549 is a prime.

It is a super-2 number, since 2×142693613² = 40722934381987538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142693673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71346806 + 71346807.

It is an arithmetic number, because the mean of its divisors is an integer number (71346807).

Almost surely, 2^142693613 is an apocalyptic number.

It is an amenable number.

142693613 is a deficient number, since it is larger than the sum of its proper divisors (1).

142693613 is an equidigital number, since it uses as much as digits as its factorization.

142693613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 142693613 is about 11945.4431897691. The cubic root of 142693613 is about 522.5584138351.

The spelling of 142693613 in words is "one hundred forty-two million, six hundred ninety-three thousand, six hundred thirteen".