142990877 has 2 divisors, whose sum is σ = 142990878. Its totient is φ = 142990876.

The previous prime is 142990787. The next prime is 142990919. The reversal of 142990877 is 778099241.

142990877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (142990787) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124233316 + 18757561 = 11146^2 + 4331^2 .

It is a cyclic number.

It is not a de Polignac number, because 142990877 - 2²⁰ = 141942301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142990277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71495438 + 71495439.

It is an arithmetic number, because the mean of its divisors is an integer number (71495439).

Almost surely, 2^142990877 is an apocalyptic number.

It is an amenable number.

142990877 is a deficient number, since it is larger than the sum of its proper divisors (1).

142990877 is an equidigital number, since it uses as much as digits as its factorization.

142990877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 142990877 is about 11957.8792852244. The cubic root of 142990877 is about 522.9210324029.

The spelling of 142990877 in words is "one hundred forty-two million, nine hundred ninety thousand, eight hundred seventy-seven".