140508453 has 4 divisors (see below), whose sum is σ = 187344608. Its totient is φ = 93672300.

The previous prime is 140508421. The next prime is 140508469. The reversal of 140508453 is 354805041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354805041 = 3 ⋅118268347.

It is not a de Polignac number, because 140508453 - 2⁵ = 140508421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140508453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140508253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23418073 + ... + 23418078.

It is an arithmetic number, because the mean of its divisors is an integer number (46836152).

Almost surely, 2^140508453 is an apocalyptic number.

It is an amenable number.

140508453 is a deficient number, since it is larger than the sum of its proper divisors (46836155).

140508453 is an equidigital number, since it uses as much as digits as its factorization.

140508453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46836154.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 140508453 is about 11853.6261540509. The cubic root of 140508453 is about 519.8772552989.

The spelling of 140508453 in words is "one hundred forty million, five hundred eight thousand, four hundred fifty-three".