142019399 has 2 divisors, whose sum is σ = 142019400. Its totient is φ = 142019398.

The previous prime is 142019393. The next prime is 142019413. The reversal of 142019399 is 993910241.

142019399 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 is a cyclic number.

It is not a de Polignac number, because 142019399 - 2¹² = 142015303 is a prime.

It is equal to p_8019686 and since 142019399 and 8019686 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142019393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71009699 + 71009700.

It is an arithmetic number, because the mean of its divisors is an integer number (71009700).

Almost surely, 2^142019399 is an apocalyptic number.

142019399 is a deficient number, since it is larger than the sum of its proper divisors (1).

142019399 is an equidigital number, since it uses as much as digits as its factorization.

142019399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 142019399 is about 11917.1892239739. The cubic root of 142019399 is about 521.7341009613.

The spelling of 142019399 in words is "one hundred forty-two million, nineteen thousand, three hundred ninety-nine".