77142206 has 8 divisors (see below), whose sum is σ = 116144280. Its totient is φ = 38427448.

The previous prime is 77142199. The next prime is 77142211. The reversal of 77142206 is 60224177.

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

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 71156 + ... + 72231.

It is an arithmetic number, because the mean of its divisors is an integer number (14518035).

Almost surely, 2^77142206 is an apocalyptic number.

77142206 is a deficient number, since it is larger than the sum of its proper divisors (39002074).

77142206 is a wasteful number, since it uses less digits than its factorization.

77142206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143658.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 77142206 is about 8783.0635885208. The cubic root of 77142206 is about 425.6938258606.

The spelling of 77142206 in words is "seventy-seven million, one hundred forty-two thousand, two hundred six".