142177489 has 2 divisors, whose sum is σ = 142177490. Its totient is φ = 142177488.

The previous prime is 142177487. The next prime is 142177493. The reversal of 142177489 is 984771241.

142177489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120275089 + 21902400 = 10967^2 + 4680^2 .

It is a cyclic number.

It is not a de Polignac number, because 142177489 - 2¹ = 142177487 is a prime.

Together with 142177487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142177487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71088744 + 71088745.

It is an arithmetic number, because the mean of its divisors is an integer number (71088745).

Almost surely, 2^142177489 is an apocalyptic number.

It is an amenable number.

142177489 is a deficient number, since it is larger than the sum of its proper divisors (1).

142177489 is an equidigital number, since it uses as much as digits as its factorization.

142177489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 43.

The square root of 142177489 is about 11923.8202351428. The cubic root of 142177489 is about 521.9276199658.

The spelling of 142177489 in words is "one hundred forty-two million, one hundred seventy-seven thousand, four hundred eighty-nine".