142320243 has 32 divisors (see below), whose sum is σ = 218707776. Its totient is φ = 81543168.

The previous prime is 142320193. The next prime is 142320247. The reversal of 142320243 is 342023241.

It is not a de Polignac number, because 142320243 - 2⁶ = 142320179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142320247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63205 + ... + 65417.

It is an arithmetic number, because the mean of its divisors is an integer number (6834618).

Almost surely, 2^142320243 is an apocalyptic number.

142320243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142320243 is a deficient number, since it is larger than the sum of its proper divisors (76387533).

142320243 is a wasteful number, since it uses less digits than its factorization.

142320243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 142320243 is about 11929.8048181854. The cubic root of 142320243 is about 522.1022428578.

Adding to 142320243 its reverse (342023241), we get a palindrome (484343484).

The spelling of 142320243 in words is "one hundred forty-two million, three hundred twenty thousand, two hundred forty-three".