140980981 has 2 divisors, whose sum is σ = 140980982. Its totient is φ = 140980980.

The previous prime is 140980979. The next prime is 140981003. The reversal of 140980981 is 189089041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137686756 + 3294225 = 11734^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 140980981 - 2¹ = 140980979 is a prime.

It is a super-2 number, since 2×140980981² = 39751274007444722, which contains 22 as substring.

Together with 140980979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140980781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70490490 + 70490491.

It is an arithmetic number, because the mean of its divisors is an integer number (70490491).

Almost surely, 2^140980981 is an apocalyptic number.

It is an amenable number.

140980981 is a deficient number, since it is larger than the sum of its proper divisors (1).

140980981 is an equidigital number, since it uses as much as digits as its factorization.

140980981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 140980981 is about 11873.5412156610. The cubic root of 140980981 is about 520.4593832490.

The spelling of 140980981 in words is "one hundred forty million, nine hundred eighty thousand, nine hundred eighty-one".