140056297 has 4 divisors (see below), whose sum is σ = 140080896. Its totient is φ = 140031700.

The previous prime is 140056291. The next prime is 140056321. The reversal of 140056297 is 792650041.

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: 792650041 = 17 ⋅46626473.

It is a cyclic number.

It is not a de Polignac number, because 140056297 - 2¹⁵ = 140023529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140056291) 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, 1128 + ... + 16774.

It is an arithmetic number, because the mean of its divisors is an integer number (35020224).

Almost surely, 2^140056297 is an apocalyptic number.

It is an amenable number.

140056297 is a deficient number, since it is larger than the sum of its proper divisors (24599).

140056297 is an equidigital number, since it uses as much as digits as its factorization.

140056297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24598.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 140056297 is about 11834.5383095413. The cubic root of 140056297 is about 519.3190012961.

It can be divided in two parts, 14005 and 6297, that added together give a palindrome (20302).

The spelling of 140056297 in words is "one hundred forty million, fifty-six thousand, two hundred ninety-seven".