140543807 has 2 divisors, whose sum is σ = 140543808. Its totient is φ = 140543806.

The previous prime is 140543783. The next prime is 140543813. The reversal of 140543807 is 708345041.

It is a strong prime.

It is an emirp because it is prime and its reverse (708345041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140543807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140543827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70271903 + 70271904.

It is an arithmetic number, because the mean of its divisors is an integer number (70271904).

Almost surely, 2^140543807 is an apocalyptic number.

140543807 is a deficient number, since it is larger than the sum of its proper divisors (1).

140543807 is an equidigital number, since it uses as much as digits as its factorization.

140543807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 140543807 is about 11855.1173338774. The cubic root of 140543807 is about 519.9208545718.

Adding to 140543807 its reverse (708345041), we get a palindrome (848888848).

The spelling of 140543807 in words is "one hundred forty million, five hundred forty-three thousand, eight hundred seven".