142393843 has 2 divisors, whose sum is σ = 142393844. Its totient is φ = 142393842.

The previous prime is 142393831. The next prime is 142393903. The reversal of 142393843 is 348393241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142393843 - 2⁹ = 142393331 is a prime.

It is not a weakly prime, because it can be changed into another prime (142393813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71196921 + 71196922.

It is an arithmetic number, because the mean of its divisors is an integer number (71196922).

Almost surely, 2^142393843 is an apocalyptic number.

142393843 is a deficient number, since it is larger than the sum of its proper divisors (1).

142393843 is an equidigital number, since it uses as much as digits as its factorization.

142393843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 142393843 is about 11932.8891304663. The cubic root of 142393843 is about 522.1922279555.

It can be divided in two parts, 1423 and 93843, that added together give a triangular number (95266 = T₄₃₆).

The spelling of 142393843 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred forty-three".