142393807 has 2 divisors, whose sum is σ = 142393808. Its totient is φ = 142393806.

The previous prime is 142393777. The next prime is 142393813. The reversal of 142393807 is 708393241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142393807 - 2¹¹ = 142391759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142393607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71196903 + 71196904.

It is an arithmetic number, because the mean of its divisors is an integer number (71196904).

Almost surely, 2^142393807 is an apocalyptic number.

142393807 is a deficient number, since it is larger than the sum of its proper divisors (1).

142393807 is an equidigital number, since it uses as much as digits as its factorization.

142393807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 142393807 is about 11932.8876220301. The cubic root of 142393807 is about 522.1921839487.

The spelling of 142393807 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred seven".