140134441 has 2 divisors, whose sum is σ = 140134442. Its totient is φ = 140134440.

The previous prime is 140134439. The next prime is 140134447. The reversal of 140134441 is 144431041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125350416 + 14784025 = 11196^2 + 3845^2 .

It is an emirp because it is prime and its reverse (144431041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140134441 - 2¹ = 140134439 is a prime.

Together with 140134439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140134447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70067220 + 70067221.

It is an arithmetic number, because the mean of its divisors is an integer number (70067221).

Almost surely, 2^140134441 is an apocalyptic number.

It is an amenable number.

140134441 is a deficient number, since it is larger than the sum of its proper divisors (1).

140134441 is an equidigital number, since it uses as much as digits as its factorization.

140134441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 140134441 is about 11837.8393721152. The cubic root of 140134441 is about 519.4155675098.

Adding to 140134441 its reverse (144431041), we get a palindrome (284565482).

The spelling of 140134441 in words is "one hundred forty million, one hundred thirty-four thousand, four hundred forty-one".