142666656 has 48 divisors (see below), whose sum is σ = 408548448. Its totient is φ = 43232000.

The previous prime is 142666637. The next prime is 142666691. The reversal of 142666656 is 656666241.

It is a happy number.

142666656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66495 + ... + 68606.

It is an arithmetic number, because the mean of its divisors is an integer number (8511426).

Almost surely, 2^142666656 is an apocalyptic number.

142666656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

142666656 is an abundant number, since it is smaller than the sum of its proper divisors (265881792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142666656 is a wasteful number, since it uses less digits than its factorization.

142666656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135125 (or 135117 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 142666656 is about 11944.3147982628. The cubic root of 142666656 is about 522.5255053444.

The spelling of 142666656 in words is "one hundred forty-two million, six hundred sixty-six thousand, six hundred fifty-six".