142693669 has 2 divisors, whose sum is σ = 142693670. Its totient is φ = 142693668.

The previous prime is 142693613. The next prime is 142693673. The reversal of 142693669 is 966396241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 66341025 = 8738^2 + 8145^2 .

It is an emirp because it is prime and its reverse (966396241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142693669 - 2⁹ = 142693157 is a prime.

It is a super-2 number, since 2×142693669² = 40722966345363122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142693069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71346834 + 71346835.

It is an arithmetic number, because the mean of its divisors is an integer number (71346835).

Almost surely, 2^142693669 is an apocalyptic number.

It is an amenable number.

142693669 is a deficient number, since it is larger than the sum of its proper divisors (1).

142693669 is an equidigital number, since it uses as much as digits as its factorization.

142693669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 142693669 is about 11945.4455337589. The cubic root of 142693669 is about 522.5584821943.

The spelling of 142693669 in words is "one hundred forty-two million, six hundred ninety-three thousand, six hundred sixty-nine".