140805541 has 2 divisors, whose sum is σ = 140805542. Its totient is φ = 140805540.

The previous prime is 140805499. The next prime is 140805583. The reversal of 140805541 is 145508041.

It is a balanced prime because it is at equal distance from previous prime (140805499) and next prime (140805583).

It can be written as a sum of positive squares in only one way, i.e., 82283041 + 58522500 = 9071^2 + 7650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140805541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140805341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70402770 + 70402771.

It is an arithmetic number, because the mean of its divisors is an integer number (70402771).

Almost surely, 2^140805541 is an apocalyptic number.

It is an amenable number.

140805541 is a deficient number, since it is larger than the sum of its proper divisors (1).

140805541 is an equidigital number, since it uses as much as digits as its factorization.

140805541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 140805541 is about 11866.1510608959. The cubic root of 140805541 is about 520.2434030613.

The spelling of 140805541 in words is "one hundred forty million, eight hundred five thousand, five hundred forty-one".