142194688 has 24 divisors (see below), whose sum is σ = 284324040. Its totient is φ = 71096320.

The previous prime is 142194673. The next prime is 142194691. The reversal of 142194688 is 886491241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32668 + ... + 36763.

It is an arithmetic number, because the mean of its divisors is an integer number (11846835).

Almost surely, 2^142194688 is an apocalyptic number.

It is an amenable number.

142194688 is a deficient number, since it is larger than the sum of its proper divisors (142129352).

142194688 is an frugal number, since it uses more digits than its factorization.

142194688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69453 (or 69433 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 142194688 is about 11924.5414167590. The cubic root of 142194688 is about 521.9486647207.

The spelling of 142194688 in words is "one hundred forty-two million, one hundred ninety-four thousand, six hundred eighty-eight".