142697131 has 2 divisors, whose sum is σ = 142697132. Its totient is φ = 142697130.

The previous prime is 142697119. The next prime is 142697161. The reversal of 142697131 is 131796241.

It is a weak prime.

It is an emirp because it is prime and its reverse (131796241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142697131 - 2¹¹ = 142695083 is a prime.

It is a super-2 number, since 2×142697131² = 40724942391262322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142697111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71348565 + 71348566.

It is an arithmetic number, because the mean of its divisors is an integer number (71348566).

Almost surely, 2^142697131 is an apocalyptic number.

142697131 is a deficient number, since it is larger than the sum of its proper divisors (1).

142697131 is an equidigital number, since it uses as much as digits as its factorization.

142697131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 142697131 is about 11945.5904416651. The cubic root of 142697131 is about 522.5627082235.

The spelling of 142697131 in words is "one hundred forty-two million, six hundred ninety-seven thousand, one hundred thirty-one".