140987233 has 4 divisors (see below), whose sum is σ = 144425988. Its totient is φ = 137548480.

The previous prime is 140987191. The next prime is 140987237. The reversal of 140987233 is 332789041.

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 7884864 + 133102369 = 2808^2 + 11537^2 .

It is a cyclic number.

It is not a de Polignac number, because 140987233 - 2⁹ = 140986721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140987192 and 140987201.

It is not an unprimeable number, because it can be changed into a prime (140987237) 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, 1719316 + ... + 1719397.

It is an arithmetic number, because the mean of its divisors is an integer number (36106497).

Almost surely, 2^140987233 is an apocalyptic number.

It is an amenable number.

140987233 is a deficient number, since it is larger than the sum of its proper divisors (3438755).

140987233 is an equidigital number, since it uses as much as digits as its factorization.

140987233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438754.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 140987233 is about 11873.8044871894. The cubic root of 140987233 is about 520.4670766366.

The spelling of 140987233 in words is "one hundred forty million, nine hundred eighty-seven thousand, two hundred thirty-three".