140823293 has 4 divisors (see below), whose sum is σ = 151655868. Its totient is φ = 129990720.

The previous prime is 140823281. The next prime is 140823301. The reversal of 140823293 is 392328041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86918329 + 53904964 = 9323^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 140823293 - 2⁶ = 140823229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140823493) 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, 5416268 + ... + 5416293.

It is an arithmetic number, because the mean of its divisors is an integer number (37913967).

Almost surely, 2^140823293 is an apocalyptic number.

140823293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140823293 is a deficient number, since it is larger than the sum of its proper divisors (10832575).

140823293 is a wasteful number, since it uses less digits than its factorization.

140823293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10832574.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 140823293 is about 11866.8990473502. The cubic root of 140823293 is about 520.2652652994.

The spelling of 140823293 in words is "one hundred forty million, eight hundred twenty-three thousand, two hundred ninety-three".