142728771 has 8 divisors (see below), whose sum is σ = 190463824. Its totient is φ = 95073120.

The previous prime is 142728769. The next prime is 142728791. The reversal of 142728771 is 177827241.

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

It is not a de Polignac number, because 142728771 - 2¹ = 142728769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142728791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15520 + ... + 22941.

It is an arithmetic number, because the mean of its divisors is an integer number (23807978).

Almost surely, 2^142728771 is an apocalyptic number.

142728771 is a deficient number, since it is larger than the sum of its proper divisors (47735053).

142728771 is a wasteful number, since it uses less digits than its factorization.

142728771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39701.

The product of its digits is 43904, while the sum is 39.

The square root of 142728771 is about 11946.9147063164. The cubic root of 142728771 is about 522.6013276924.

The spelling of 142728771 in words is "one hundred forty-two million, seven hundred twenty-eight thousand, seven hundred seventy-one".