140268497 has 4 divisors (see below), whose sum is σ = 141657396. Its totient is φ = 138879600.

The previous prime is 140268493. The next prime is 140268577. The reversal of 140268497 is 794862041.

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 131997121 + 8271376 = 11489^2 + 2876^2 .

It is a cyclic number.

It is not a de Polignac number, because 140268497 - 2² = 140268493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140268493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694298 + ... + 694499.

It is an arithmetic number, because the mean of its divisors is an integer number (35414349).

Almost surely, 2^140268497 is an apocalyptic number.

It is an amenable number.

140268497 is a deficient number, since it is larger than the sum of its proper divisors (1388899).

140268497 is a wasteful number, since it uses less digits than its factorization.

140268497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388898.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 140268497 is about 11843.5002005319. The cubic root of 140268497 is about 519.5811432267.

The spelling of 140268497 in words is "one hundred forty million, two hundred sixty-eight thousand, four hundred ninety-seven".