140493601 has 4 divisors (see below), whose sum is σ = 141076804. Its totient is φ = 139910400.

The previous prime is 140493557. The next prime is 140493611. The reversal of 140493601 is 106394041.

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 39992976 + 100500625 = 6324^2 + 10025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140493601 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 140493601.

It is not an unprimeable number, because it can be changed into a prime (140493611) 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, 291240 + ... + 291721.

It is an arithmetic number, because the mean of its divisors is an integer number (35269201).

Almost surely, 2^140493601 is an apocalyptic number.

It is an amenable number.

140493601 is a deficient number, since it is larger than the sum of its proper divisors (583203).

140493601 is an equidigital number, since it uses as much as digits as its factorization.

140493601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583202.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 140493601 is about 11852.9996625327. Note that the first 3 decimals coincide. The cubic root of 140493601 is about 519.8589373285.

The spelling of 140493601 in words is "one hundred forty million, four hundred ninety-three thousand, six hundred one".