140564423 has 4 divisors (see below), whose sum is σ = 140601960. Its totient is φ = 140526888.

The previous prime is 140564407. The next prime is 140564467. The reversal of 140564423 is 324465041.

140564423 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: 324465041 = 3797 ⋅85453.

It is a cyclic number.

It is not a de Polignac number, because 140564423 - 2⁴ = 140564407 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 (140566423) 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, 12440 + ... + 20877.

It is an arithmetic number, because the mean of its divisors is an integer number (35150490).

Almost surely, 2^140564423 is an apocalyptic number.

140564423 is a deficient number, since it is larger than the sum of its proper divisors (37537).

140564423 is an equidigital number, since it uses as much as digits as its factorization.

140564423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37536.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 140564423 is about 11855.9867999252. The cubic root of 140564423 is about 519.9462752681.

The spelling of 140564423 in words is "one hundred forty million, five hundred sixty-four thousand, four hundred twenty-three".