142923293 has 4 divisors (see below), whose sum is σ = 142996860. Its totient is φ = 142849728.

The previous prime is 142923289. The next prime is 142923317. The reversal of 142923293 is 392329241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 392329241 = 37 ⋅10603493.

It can be written as a sum of positive squares in 2 ways, for example, as 49182169 + 93741124 = 7013^2 + 9682^2 .

It is a cyclic number.

It is not a de Polignac number, because 142923293 - 2² = 142923289 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 (142923203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33788 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (35749215).

Almost surely, 2^142923293 is an apocalyptic number.

It is an amenable number.

142923293 is a deficient number, since it is larger than the sum of its proper divisors (73567).

142923293 is an equidigital number, since it uses as much as digits as its factorization.

142923293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73566.

The product of its digits is 23328, while the sum is 35.

The square root of 142923293 is about 11955.0530320865. The cubic root of 142923293 is about 522.8386339889.

The spelling of 142923293 in words is "one hundred forty-two million, nine hundred twenty-three thousand, two hundred ninety-three".