140220061 has 2 divisors, whose sum is σ = 140220062. Its totient is φ = 140220060.

The previous prime is 140220053. The next prime is 140220071. The reversal of 140220061 is 160022041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129527161 + 10692900 = 11381^2 + 3270^2 .

It is an emirp because it is prime and its reverse (160022041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140220061 - 2³ = 140220053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140220001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70110030 + 70110031.

It is an arithmetic number, because the mean of its divisors is an integer number (70110031).

Almost surely, 2^140220061 is an apocalyptic number.

It is an amenable number.

140220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

140220061 is an equidigital number, since it uses as much as digits as its factorization.

140220061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140220061 is about 11841.4551892916. The cubic root of 140220061 is about 519.5213309617.

The spelling of 140220061 in words is "one hundred forty million, two hundred twenty thousand, sixty-one".