140422453 has 4 divisors (see below), whose sum is σ = 140490540. Its totient is φ = 140354368.

The previous prime is 140422423. The next prime is 140422489. The reversal of 140422453 is 354224041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54730404 + 85692049 = 7398^2 + 9257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140422453 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 (140422423) 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, 30850 + ... + 35107.

It is an arithmetic number, because the mean of its divisors is an integer number (35122635).

Almost surely, 2^140422453 is an apocalyptic number.

It is an amenable number.

140422453 is a deficient number, since it is larger than the sum of its proper divisors (68087).

140422453 is an equidigital number, since it uses as much as digits as its factorization.

140422453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68086.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140422453 is about 11849.9980168775. The cubic root of 140422453 is about 519.7711678056.

Adding to 140422453 its reverse (354224041), we get a palindrome (494646494).

The spelling of 140422453 in words is "one hundred forty million, four hundred twenty-two thousand, four hundred fifty-three".