140122481 has 2 divisors, whose sum is σ = 140122482. Its totient is φ = 140122480.

The previous prime is 140122459. The next prime is 140122487. The reversal of 140122481 is 184221041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100180081 + 39942400 = 10009^2 + 6320^2 .

It is an emirp because it is prime and its reverse (184221041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140122481 is a prime.

It is a super-2 number, since 2×140122481² = 39268619363190722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140122487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70061240 + 70061241.

It is an arithmetic number, because the mean of its divisors is an integer number (70061241).

Almost surely, 2^140122481 is an apocalyptic number.

It is an amenable number.

140122481 is a deficient number, since it is larger than the sum of its proper divisors (1).

140122481 is an equidigital number, since it uses as much as digits as its factorization.

140122481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 140122481 is about 11837.3342015844. The cubic root of 140122481 is about 519.4007903028.

The spelling of 140122481 in words is "one hundred forty million, one hundred twenty-two thousand, four hundred eighty-one".