140342023 has 4 divisors (see below), whose sum is σ = 140366160. Its totient is φ = 140317888.

The previous prime is 140342011. The next prime is 140342051. The reversal of 140342023 is 320243041.

140342023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320243041 = 167 ⋅1917623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140342023 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 (140342063) 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, 2583 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (35091540).

Almost surely, 2^140342023 is an apocalyptic number.

140342023 is a deficient number, since it is larger than the sum of its proper divisors (24137).

140342023 is an equidigital number, since it uses as much as digits as its factorization.

140342023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 140342023 is about 11846.6038593345. The cubic root of 140342023 is about 519.6719121232.

Adding to 140342023 its reverse (320243041), we get a palindrome (460585064).

The spelling of 140342023 in words is "one hundred forty million, three hundred forty-two thousand, twenty-three".