142881619 has 2 divisors, whose sum is σ = 142881620. Its totient is φ = 142881618.

The previous prime is 142881601. The next prime is 142881623. The reversal of 142881619 is 916188241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142881619 - 2¹¹ = 142879571 is a prime.

It is a super-2 number, since 2×142881619² = 40830314096122322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142881649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71440809 + 71440810.

It is an arithmetic number, because the mean of its divisors is an integer number (71440810).

Almost surely, 2^142881619 is an apocalyptic number.

142881619 is a deficient number, since it is larger than the sum of its proper divisors (1).

142881619 is an equidigital number, since it uses as much as digits as its factorization.

142881619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 40.

The square root of 142881619 is about 11953.3099600069. The cubic root of 142881619 is about 522.7878120996.

The spelling of 142881619 in words is "one hundred forty-two million, eight hundred eighty-one thousand, six hundred nineteen".