140021485 has 4 divisors (see below), whose sum is σ = 168025788. Its totient is φ = 112017184.

The previous prime is 140021467. The next prime is 140021501. The reversal of 140021485 is 584120041.

140021485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 26193924 + 113827561 = 5118^2 + 10669^2 .

It is a cyclic number.

It is not a de Polignac number, because 140021485 - 2⁹ = 140020973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14002144 + ... + 14002153.

It is an arithmetic number, because the mean of its divisors is an integer number (42006447).

Almost surely, 2^140021485 is an apocalyptic number.

It is an amenable number.

140021485 is a deficient number, since it is larger than the sum of its proper divisors (28004303).

140021485 is an equidigital number, since it uses as much as digits as its factorization.

140021485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28004302.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 140021485 is about 11833.0674383272. The cubic root of 140021485 is about 519.2759709064.

The spelling of 140021485 in words is "one hundred forty million, twenty-one thousand, four hundred eighty-five".