142562881 has 2 divisors, whose sum is σ = 142562882. Its totient is φ = 142562880.

The previous prime is 142562879. The next prime is 142562911. The reversal of 142562881 is 188265241.

142562881 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., 83887281 + 58675600 = 9159^2 + 7660^2 .

It is an emirp because it is prime and its reverse (188265241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142562881 - 2¹ = 142562879 is a prime.

It is a super-2 number, since 2×142562881² = 40648350078040322, which contains 22 as substring.

Together with 142562879, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142562881.

It is not a weakly prime, because it can be changed into another prime (142562851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71281440 + 71281441.

It is an arithmetic number, because the mean of its divisors is an integer number (71281441).

Almost surely, 2^142562881 is an apocalyptic number.

142562881 is the 7552-nd centered pentagonal number.

It is an amenable number.

142562881 is a deficient number, since it is larger than the sum of its proper divisors (1).

142562881 is an equidigital number, since it uses as much as digits as its factorization.

142562881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 37.

The square root of 142562881 is about 11939.9698910843. The cubic root of 142562881 is about 522.3987804814.

The spelling of 142562881 in words is "one hundred forty-two million, five hundred sixty-two thousand, eight hundred eighty-one".