140323145 has 8 divisors (see below), whose sum is σ = 168527304. Its totient is φ = 112165504.

The previous prime is 140323123. The next prime is 140323217. The reversal of 140323145 is 541323041.

It can be written as a sum of positive squares in 4 ways, for example, as 19784704 + 120538441 = 4448^2 + 10979^2 .

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 140323145 - 2¹⁰ = 140322121 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 140323145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4604 + ... + 17373.

It is an arithmetic number, because the mean of its divisors is an integer number (21065913).

Almost surely, 2^140323145 is an apocalyptic number.

It is an amenable number.

140323145 is a deficient number, since it is larger than the sum of its proper divisors (28204159).

140323145 is a wasteful number, since it uses less digits than its factorization.

140323145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23259.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 140323145 is about 11845.8070641050. The cubic root of 140323145 is about 519.6486099883.

Adding to 140323145 its reverse (541323041), we get a palindrome (681646186).

The spelling of 140323145 in words is "one hundred forty million, three hundred twenty-three thousand, one hundred forty-five".