140485721 has 8 divisors (see below), whose sum is σ = 144111744. Its totient is φ = 136869280.

The previous prime is 140485673. The next prime is 140485729. The reversal of 140485721 is 127584041.

It is a happy number.

140485721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 140485721 - 2¹⁰ = 140484697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140485729) 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, 34436 + ... + 38298.

It is an arithmetic number, because the mean of its divisors is an integer number (18013968).

Almost surely, 2^140485721 is an apocalyptic number.

It is an amenable number.

140485721 is a deficient number, since it is larger than the sum of its proper divisors (3626023).

140485721 is an equidigital number, since it uses as much as digits as its factorization.

140485721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 140485721 is about 11852.6672525639. The cubic root of 140485721 is about 519.8492178704.

The spelling of 140485721 in words is "one hundred forty million, four hundred eighty-five thousand, seven hundred twenty-one".