142822669 has 4 divisors (see below), whose sum is σ = 155806560. Its totient is φ = 129838780.

The previous prime is 142822649. The next prime is 142822679. The reversal of 142822669 is 966228241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966228241 = 11 ⋅87838931.

It is a cyclic number.

It is not a de Polignac number, because 142822669 - 2⁷ = 142822541 is a prime.

It is a super-2 number, since 2×142822669² = 40796629560567122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142822649) 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 in 3 ways as a sum of consecutive naturals, for example, 6491929 + ... + 6491950.

It is an arithmetic number, because the mean of its divisors is an integer number (38951640).

Almost surely, 2^142822669 is an apocalyptic number.

It is an amenable number.

142822669 is a deficient number, since it is larger than the sum of its proper divisors (12983891).

142822669 is a wasteful number, since it uses less digits than its factorization.

142822669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12983890.

The product of its digits is 82944, while the sum is 40.

The square root of 142822669 is about 11950.8438614183. The cubic root of 142822669 is about 522.7159050644.

The spelling of 142822669 in words is "one hundred forty-two million, eight hundred twenty-two thousand, six hundred sixty-nine".