142668799 has 8 divisors (see below), whose sum is σ = 175592480. Its totient is φ = 112880736.

The previous prime is 142668751. The next prime is 142668803. The reversal of 142668799 is 997866241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142668799 - 2⁷ = 142668671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142668299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783804 + ... + 783985.

It is an arithmetic number, because the mean of its divisors is an integer number (21949060).

Almost surely, 2^142668799 is an apocalyptic number.

142668799 is a deficient number, since it is larger than the sum of its proper divisors (32923681).

142668799 is a wasteful number, since it uses less digits than its factorization.

142668799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567809.

The product of its digits is 1306368, while the sum is 52.

The square root of 142668799 is about 11944.4045058764. The cubic root of 142668799 is about 522.5281216216.

It can be divided in two parts, 1426 and 68799, that added together give a square (70225 = 265²).

The spelling of 142668799 in words is "one hundred forty-two million, six hundred sixty-eight thousand, seven hundred ninety-nine".