140136901 has 2 divisors, whose sum is σ = 140136902. Its totient is φ = 140136900.

The previous prime is 140136869. The next prime is 140136917. The reversal of 140136901 is 109631041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132020100 + 8116801 = 11490^2 + 2849^2 .

It is a cyclic number.

It is not a de Polignac number, because 140136901 - 2⁵ = 140136869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140133901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70068450 + 70068451.

It is an arithmetic number, because the mean of its divisors is an integer number (70068451).

Almost surely, 2^140136901 is an apocalyptic number.

It is an amenable number.

140136901 is a deficient number, since it is larger than the sum of its proper divisors (1).

140136901 is an equidigital number, since it uses as much as digits as its factorization.

140136901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 140136901 is about 11837.9432757553. The cubic root of 140136901 is about 519.4186068645.

Adding to 140136901 its reverse (109631041), we get a palindrome (249767942).

The spelling of 140136901 in words is "one hundred forty million, one hundred thirty-six thousand, nine hundred one".