142230986 has 4 divisors (see below), whose sum is σ = 213346482. Its totient is φ = 71115492.

The previous prime is 142230973. The next prime is 142231013. The reversal of 142230986 is 689032241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689032241 = 37 ⋅18622493.

It can be written as a sum of positive squares in only one way, i.e., 71149225 + 71081761 = 8435^2 + 8431^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35557745 + ... + 35557748.

Almost surely, 2^142230986 is an apocalyptic number.

142230986 is a deficient number, since it is larger than the sum of its proper divisors (71115496).

142230986 is an equidigital number, since it uses as much as digits as its factorization.

142230986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71115495.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 142230986 is about 11926.0633068922. The cubic root of 142230986 is about 521.9930735075.

The spelling of 142230986 in words is "one hundred forty-two million, two hundred thirty thousand, nine hundred eighty-six".