140661323 has 4 divisors (see below), whose sum is σ = 153448728. Its totient is φ = 127873920.

The previous prime is 140661319. The next prime is 140661343. The reversal of 140661323 is 323166041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140661323 - 2² = 140661319 is a prime.

It is a super-2 number, since 2×140661323² = 39571215576220658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140661292 and 140661301.

It is not an unprimeable number, because it can be changed into a prime (140661343) 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 in 3 ways as a sum of consecutive naturals, for example, 6393686 + ... + 6393707.

It is an arithmetic number, because the mean of its divisors is an integer number (38362182).

Almost surely, 2^140661323 is an apocalyptic number.

140661323 is a deficient number, since it is larger than the sum of its proper divisors (12787405).

140661323 is a wasteful number, since it uses less digits than its factorization.

140661323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787404.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 140661323 is about 11860.0726389007. The cubic root of 140661323 is about 520.0657251736.

The spelling of 140661323 in words is "one hundred forty million, six hundred sixty-one thousand, three hundred twenty-three".