142541081 has 2 divisors, whose sum is σ = 142541082. Its totient is φ = 142541080.

The previous prime is 142541033. The next prime is 142541111. The reversal of 142541081 is 180145241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127486681 + 15054400 = 11291^2 + 3880^2 .

It is an emirp because it is prime and its reverse (180145241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142541081 - 2⁶ = 142541017 is a prime.

It is a super-2 number, since 2×142541081² = 40635919545297122, which contains 22 as substring.

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 142541081.

It is not a weakly prime, because it can be changed into another prime (142541981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71270540 + 71270541.

It is an arithmetic number, because the mean of its divisors is an integer number (71270541).

Almost surely, 2^142541081 is an apocalyptic number.

It is an amenable number.

142541081 is a deficient number, since it is larger than the sum of its proper divisors (1).

142541081 is an equidigital number, since it uses as much as digits as its factorization.

142541081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 142541081 is about 11939.0569560581. The cubic root of 142541081 is about 522.3721515911.

The spelling of 142541081 in words is "one hundred forty-two million, five hundred forty-one thousand, eighty-one".