140543453 has 2 divisors, whose sum is σ = 140543454. Its totient is φ = 140543452.

The previous prime is 140543413. The next prime is 140543467. The reversal of 140543453 is 354345041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126270169 + 14273284 = 11237^2 + 3778^2 .

It is a cyclic number.

It is not a de Polignac number, because 140543453 - 2⁸ = 140543197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140543413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70271726 + 70271727.

It is an arithmetic number, because the mean of its divisors is an integer number (70271727).

Almost surely, 2^140543453 is an apocalyptic number.

It is an amenable number.

140543453 is a deficient number, since it is larger than the sum of its proper divisors (1).

140543453 is an equidigital number, since it uses as much as digits as its factorization.

140543453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 140543453 is about 11855.1024036066. The cubic root of 140543453 is about 519.9204180480.

Adding to 140543453 its reverse (354345041), we get a palindrome (494888494).

The spelling of 140543453 in words is "one hundred forty million, five hundred forty-three thousand, four hundred fifty-three".