142177889 has 8 divisors (see below), whose sum is σ = 163332480. Its totient is φ = 121234176.

The previous prime is 142177883. The next prime is 142177901. The reversal of 142177889 is 988771241.

It is a happy number.

142177889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-142177889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142177883) 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, 51269 + ... + 53970.

It is an arithmetic number, because the mean of its divisors is an integer number (20416560).

Almost surely, 2^142177889 is an apocalyptic number.

It is an amenable number.

142177889 is a deficient number, since it is larger than the sum of its proper divisors (21154591).

142177889 is a wasteful number, since it uses less digits than its factorization.

142177889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105439.

The product of its digits is 225792, while the sum is 47.

The square root of 142177889 is about 11923.8370082788. The cubic root of 142177889 is about 521.9281094265.

The spelling of 142177889 in words is "one hundred forty-two million, one hundred seventy-seven thousand, eight hundred eighty-nine".