140539673 has 8 divisors (see below), whose sum is σ = 142849896. Its totient is φ = 138240000.

The previous prime is 140539661. The next prime is 140539681. The reversal of 140539673 is 376935041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73496329 + 67043344 = 8573^2 + 8188^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140539673 - 2⁸ = 140539417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140539073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26873 + ... + 31673.

It is an arithmetic number, because the mean of its divisors is an integer number (17856237).

Almost surely, 2^140539673 is an apocalyptic number.

It is an amenable number.

140539673 is a deficient number, since it is larger than the sum of its proper divisors (2310223).

140539673 is an equidigital number, since it uses as much as digits as its factorization.

140539673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 140539673 is about 11854.9429775094. The cubic root of 140539673 is about 519.9157568163.

The spelling of 140539673 in words is "one hundred forty million, five hundred thirty-nine thousand, six hundred seventy-three".