142664231 has 2 divisors, whose sum is σ = 142664232. Its totient is φ = 142664230.

The previous prime is 142664209. The next prime is 142664233. The reversal of 142664231 is 132466241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142664231 - 2¹⁴ = 142647847 is a prime.

It is a super-2 number, since 2×142664231² = 40706165613642722, which contains 22 as substring.

Together with 142664233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142664194 and 142664203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142664233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71332115 + 71332116.

It is an arithmetic number, because the mean of its divisors is an integer number (71332116).

Almost surely, 2^142664231 is an apocalyptic number.

142664231 is a deficient number, since it is larger than the sum of its proper divisors (1).

142664231 is an equidigital number, since it uses as much as digits as its factorization.

142664231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 142664231 is about 11944.2132851017. The cubic root of 142664231 is about 522.5225447565.

The spelling of 142664231 in words is "one hundred forty-two million, six hundred sixty-four thousand, two hundred thirty-one".