142559881 has 2 divisors, whose sum is σ = 142559882. Its totient is φ = 142559880.

The previous prime is 142559873. The next prime is 142559897. The reversal of 142559881 is 188955241.

142559881 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., 135489600 + 7070281 = 11640^2 + 2659^2 .

It is a cyclic number.

It is not a de Polignac number, because 142559881 - 2³ = 142559873 is a prime.

It is a super-2 number, since 2×142559881² = 40646639341468322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142559801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71279940 + 71279941.

It is an arithmetic number, because the mean of its divisors is an integer number (71279941).

Almost surely, 2^142559881 is an apocalyptic number.

It is an amenable number.

142559881 is a deficient number, since it is larger than the sum of its proper divisors (1).

142559881 is an equidigital number, since it uses as much as digits as its factorization.

142559881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 43.

The square root of 142559881 is about 11939.8442619659. The cubic root of 142559881 is about 522.3951161163.

The spelling of 142559881 in words is "one hundred forty-two million, five hundred fifty-nine thousand, eight hundred eighty-one".