142838293 has 6 divisors (see below), whose sum is σ = 154671234. Its totient is φ = 131850576.

The previous prime is 142838291. The next prime is 142838309. The reversal of 142838293 is 392838241.

It can be written as a sum of positive squares in 3 ways, for example, as 11437924 + 131400369 = 3382^2 + 11463^2 .

It is not a de Polignac number, because 142838293 - 2¹ = 142838291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142838291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422430 + ... + 422767.

It is an arithmetic number, because the mean of its divisors is an integer number (25778539).

Almost surely, 2^142838293 is an apocalyptic number.

142838293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142838293 is a deficient number, since it is larger than the sum of its proper divisors (11832941).

142838293 is an equidigital number, since it uses as much as digits as its factorization.

142838293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845223 (or 845210 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 142838293 is about 11951.4975212314. The cubic root of 142838293 is about 522.7349651001.

The spelling of 142838293 in words is "one hundred forty-two million, eight hundred thirty-eight thousand, two hundred ninety-three".