140105723 has 2 divisors, whose sum is σ = 140105724. Its totient is φ = 140105722.

The previous prime is 140105711. The next prime is 140105759. The reversal of 140105723 is 327501041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140105723 is a prime.

It is a super-2 number, since 2×140105723² = 39259227234705458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140105783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70052861 + 70052862.

It is an arithmetic number, because the mean of its divisors is an integer number (70052862).

Almost surely, 2^140105723 is an apocalyptic number.

140105723 is a deficient number, since it is larger than the sum of its proper divisors (1).

140105723 is an equidigital number, since it uses as much as digits as its factorization.

140105723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 140105723 is about 11836.6263352359. The cubic root of 140105723 is about 519.3800835007.

Adding to 140105723 its reverse (327501041), we get a palindrome (467606764).

The spelling of 140105723 in words is "one hundred forty million, one hundred five thousand, seven hundred twenty-three".