140561061 has 8 divisors (see below), whose sum is σ = 188537664. Its totient is φ = 93145920.

The previous prime is 140561053. The next prime is 140561089. The reversal of 140561061 is 160165041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140561061 - 2³ = 140561053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140561021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139780 + ... + 140781.

It is an arithmetic number, because the mean of its divisors is an integer number (23567208).

Almost surely, 2^140561061 is an apocalyptic number.

It is an amenable number.

140561061 is a deficient number, since it is larger than the sum of its proper divisors (47976603).

140561061 is a wasteful number, since it uses less digits than its factorization.

140561061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280731.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 140561061 is about 11855.8450141692. The cubic root of 140561061 is about 519.9421299012.

The spelling of 140561061 in words is "one hundred forty million, five hundred sixty-one thousand, sixty-one".