142728694 has 4 divisors (see below), whose sum is σ = 214093044. Its totient is φ = 71364346.

The previous prime is 142728679. The next prime is 142728713. The reversal of 142728694 is 496827241.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142728694.

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, 35682172 + ... + 35682175.

It is an arithmetic number, because the mean of its divisors is an integer number (53523261).

Almost surely, 2^142728694 is an apocalyptic number.

142728694 is a deficient number, since it is larger than the sum of its proper divisors (71364350).

142728694 is an equidigital number, since it uses as much as digits as its factorization.

142728694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71364349.

The product of its digits is 193536, while the sum is 43.

The square root of 142728694 is about 11946.9114837267. The cubic root of 142728694 is about 522.6012337139.

The spelling of 142728694 in words is "one hundred forty-two million, seven hundred twenty-eight thousand, six hundred ninety-four".