140462561 has 4 divisors (see below), whose sum is σ = 143112852. Its totient is φ = 137812272.

The previous prime is 140462549. The next prime is 140462563. The reversal of 140462561 is 165264041.

140462561 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 108472225 + 31990336 = 10415^2 + 5656^2 .

It is a cyclic number.

It is not a de Polignac number, because 140462561 - 2¹⁰ = 140461537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140462563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325066 + ... + 1325171.

It is an arithmetic number, because the mean of its divisors is an integer number (35778213).

Almost surely, 2^140462561 is an apocalyptic number.

It is an amenable number.

140462561 is a deficient number, since it is larger than the sum of its proper divisors (2650291).

140462561 is an equidigital number, since it uses as much as digits as its factorization.

140462561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650290.

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

The square root of 140462561 is about 11851.6902170112. The cubic root of 140462561 is about 519.8206494401.

The spelling of 140462561 in words is "one hundred forty million, four hundred sixty-two thousand, five hundred sixty-one".