140512997 has 2 divisors, whose sum is σ = 140512998. Its totient is φ = 140512996.

The previous prime is 140512991. The next prime is 140513011. The reversal of 140512997 is 799215041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130279396 + 10233601 = 11414^2 + 3199^2 .

It is a cyclic number.

It is not a de Polignac number, because 140512997 - 2⁸ = 140512741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140512997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140512991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70256498 + 70256499.

It is an arithmetic number, because the mean of its divisors is an integer number (70256499).

Almost surely, 2^140512997 is an apocalyptic number.

It is an amenable number.

140512997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140512997 is an equidigital number, since it uses as much as digits as its factorization.

140512997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 140512997 is about 11853.8178238068. The cubic root of 140512997 is about 519.8828594618.

The spelling of 140512997 in words is "one hundred forty million, five hundred twelve thousand, nine hundred ninety-seven".