142377986 has 8 divisors (see below), whose sum is σ = 213643020. Its totient is φ = 71163648.

The previous prime is 142377979. The next prime is 142377997. The reversal of 142377986 is 689773241.

It can be written as a sum of positive squares in 2 ways, for example, as 106605625 + 35772361 = 10325^2 + 5981^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 142377986.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631 + ... + 17498.

Almost surely, 2^142377986 is an apocalyptic number.

142377986 is a deficient number, since it is larger than the sum of its proper divisors (71265034).

142377986 is a wasteful number, since it uses less digits than its factorization.

142377986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25348.

The product of its digits is 508032, while the sum is 47.

The square root of 142377986 is about 11932.2246877940. The cubic root of 142377986 is about 522.1728434340.

The spelling of 142377986 in words is "one hundred forty-two million, three hundred seventy-seven thousand, nine hundred eighty-six".