142066890 has 48 divisors (see below), whose sum is σ = 422143488. Its totient is φ = 32472288.

The previous prime is 142066889. The next prime is 142066907. The reversal of 142066890 is 98660241.

142066890 = 1093² + 1094² + ... + 1200².

142066890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112122 + ... + 113381.

It is an arithmetic number, because the mean of its divisors is an integer number (8794656).

Almost surely, 2^142066890 is an apocalyptic number.

142066890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142066890 is an abundant number, since it is smaller than the sum of its proper divisors (280076598).

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

142066890 is a wasteful number, since it uses less digits than its factorization.

142066890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225523 (or 225520 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 142066890 is about 11919.1815994220. The cubic root of 142066890 is about 521.7922500898.

The spelling of 142066890 in words is "one hundred forty-two million, sixty-six thousand, eight hundred ninety".