140661245 has 4 divisors (see below), whose sum is σ = 168793500. Its totient is φ = 112528992.

The previous prime is 140661197. The next prime is 140661253. The reversal of 140661245 is 542166041.

140661245 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 82337476 + 58323769 = 9074^2 + 7637^2 .

It is a cyclic number.

It is not a de Polignac number, because 140661245 - 2¹² = 140657149 is a prime.

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, 14066120 + ... + 14066129.

It is an arithmetic number, because the mean of its divisors is an integer number (42198375).

Almost surely, 2^140661245 is an apocalyptic number.

It is an amenable number.

140661245 is a deficient number, since it is larger than the sum of its proper divisors (28132255).

140661245 is an equidigital number, since it uses as much as digits as its factorization.

140661245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28132254.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 140661245 is about 11860.0693505561. The cubic root of 140661245 is about 520.0656290440.

The spelling of 140661245 in words is "one hundred forty million, six hundred sixty-one thousand, two hundred forty-five".