142225819 has 2 divisors, whose sum is σ = 142225820. Its totient is φ = 142225818.

The previous prime is 142225801. The next prime is 142225823. The reversal of 142225819 is 918522241.

142225819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142225819 - 2¹³ = 142217627 is a prime.

It is a super-2 number, since 2×142225819² = 40456367180441522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142225879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71112909 + 71112910.

It is an arithmetic number, because the mean of its divisors is an integer number (71112910).

Almost surely, 2^142225819 is an apocalyptic number.

142225819 is a deficient number, since it is larger than the sum of its proper divisors (1).

142225819 is an equidigital number, since it uses as much as digits as its factorization.

142225819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

The square root of 142225819 is about 11925.8466785382. The cubic root of 142225819 is about 521.9867524028.

The spelling of 142225819 in words is "one hundred forty-two million, two hundred twenty-five thousand, eight hundred nineteen".