142804393 has 2 divisors, whose sum is σ = 142804394. Its totient is φ = 142804392.

The previous prime is 142804373. The next prime is 142804421. The reversal of 142804393 is 393408241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121616784 + 21187609 = 11028^2 + 4603^2 .

It is a cyclic number.

It is not a de Polignac number, because 142804393 - 2²⁵ = 109249961 is a prime.

It is not a weakly prime, because it can be changed into another prime (142804373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71402196 + 71402197.

It is an arithmetic number, because the mean of its divisors is an integer number (71402197).

Almost surely, 2^142804393 is an apocalyptic number.

It is an amenable number.

142804393 is a deficient number, since it is larger than the sum of its proper divisors (1).

142804393 is an equidigital number, since it uses as much as digits as its factorization.

142804393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 142804393 is about 11950.0792047584. The cubic root of 142804393 is about 522.6936080358.

The spelling of 142804393 in words is "one hundred forty-two million, eight hundred four thousand, three hundred ninety-three".