142667746 has 8 divisors (see below), whose sum is σ = 230463324. Its totient is φ = 65846640.

The previous prime is 142667743. The next prime is 142667761. The reversal of 142667746 is 647766241.

It can be written as a sum of positive squares in 2 ways, for example, as 109432521 + 33235225 = 10461^2 + 5765^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142667743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2743585 + ... + 2743636.

Almost surely, 2^142667746 is an apocalyptic number.

142667746 is a deficient number, since it is larger than the sum of its proper divisors (87795578).

142667746 is a wasteful number, since it uses less digits than its factorization.

142667746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487236.

The product of its digits is 338688, while the sum is 43.

The square root of 142667746 is about 11944.3604265779. The cubic root of 142667746 is about 522.5268360720.

The spelling of 142667746 in words is "one hundred forty-two million, six hundred sixty-seven thousand, seven hundred forty-six".