142399186 has 8 divisors (see below), whose sum is σ = 224840880. Its totient is φ = 67452228.

The previous prime is 142399183. The next prime is 142399211. The reversal of 142399186 is 681993241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (142399183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1873636 + ... + 1873711.

It is an arithmetic number, because the mean of its divisors is an integer number (28105110).

Almost surely, 2^142399186 is an apocalyptic number.

142399186 is a deficient number, since it is larger than the sum of its proper divisors (82441694).

142399186 is a wasteful number, since it uses less digits than its factorization.

142399186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747368.

The product of its digits is 93312, while the sum is 43.

The square root of 142399186 is about 11933.1130054148. The cubic root of 142399186 is about 522.1987592262.

The spelling of 142399186 in words is "one hundred forty-two million, three hundred ninety-nine thousand, one hundred eighty-six".