140540423 has 2 divisors, whose sum is σ = 140540424. Its totient is φ = 140540422.

The previous prime is 140540399. The next prime is 140540431. The reversal of 140540423 is 324045041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140540423 - 2¹² = 140536327 is a prime.

It is a super-2 number, since 2×140540423² = 39503220994037858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140540483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70270211 + 70270212.

It is an arithmetic number, because the mean of its divisors is an integer number (70270212).

Almost surely, 2^140540423 is an apocalyptic number.

140540423 is a deficient number, since it is larger than the sum of its proper divisors (1).

140540423 is an equidigital number, since it uses as much as digits as its factorization.

140540423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140540423 is about 11854.9746098421. The cubic root of 140540423 is about 519.9166816705.

Adding to 140540423 its reverse (324045041), we get a palindrome (464585464).

The spelling of 140540423 in words is "one hundred forty million, five hundred forty thousand, four hundred twenty-three".