142166688 has 24 divisors (see below), whose sum is σ = 373187808. Its totient is φ = 47388864.

The previous prime is 142166641. The next prime is 142166701. The reversal of 142166688 is 886661241.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×142166688² = 40422734353778688, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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, 740356 + ... + 740547.

It is an arithmetic number, because the mean of its divisors is an integer number (15549492).

Almost surely, 2^142166688 is an apocalyptic number.

It is an amenable number.

142166688 is an abundant number, since it is smaller than the sum of its proper divisors (231021120).

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

142166688 is a wasteful number, since it uses less digits than its factorization.

142166688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480916 (or 1480908 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 142166688 is about 11923.3673096152. The cubic root of 142166688 is about 521.9144029579.

The spelling of 142166688 in words is "one hundred forty-two million, one hundred sixty-six thousand, six hundred eighty-eight".