140561201 has 4 divisors (see below), whose sum is σ = 153339504. Its totient is φ = 127782900.

The previous prime is 140561191. The next prime is 140561207. The reversal of 140561201 is 102165041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140561201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140561207) 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 3 ways as a sum of consecutive naturals, for example, 6389135 + ... + 6389156.

It is an arithmetic number, because the mean of its divisors is an integer number (38334876).

Almost surely, 2^140561201 is an apocalyptic number.

140561201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140561201 is a deficient number, since it is larger than the sum of its proper divisors (12778303).

140561201 is a wasteful number, since it uses less digits than its factorization.

140561201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778302.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 140561201 is about 11855.8509184284. The cubic root of 140561201 is about 519.9423025234.

The spelling of 140561201 in words is "one hundred forty million, five hundred sixty-one thousand, two hundred one".