142426666 has 16 divisors (see below), whose sum is σ = 215952264. Its totient is φ = 70447104.

The previous prime is 142426637. The next prime is 142426667. The reversal of 142426666 is 666624241.

It can be written as a sum of positive squares in 4 ways, for example, as 107557641 + 34869025 = 10371^2 + 5905^2 .

It is not an unprimeable number, because it can be changed into a prime (142426667) 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, 75106 + ... + 76978.

Almost surely, 2^142426666 is an apocalyptic number.

142426666 is a deficient number, since it is larger than the sum of its proper divisors (73525598).

142426666 is a wasteful number, since it uses less digits than its factorization.

142426666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265.

The product of its digits is 82944, while the sum is 37.

The square root of 142426666 is about 11934.2643677773. The cubic root of 142426666 is about 522.2323481329.

The spelling of 142426666 in words is "one hundred forty-two million, four hundred twenty-six thousand, six hundred sixty-six".