140438421859 has 2 divisors, whose sum is σ = 140438421860. Its totient is φ = 140438421858.

The previous prime is 140438421821. The next prime is 140438421869. The reversal of 140438421859 is 958124834041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140438421859 - 2¹¹ = 140438419811 is a prime.

It is not a weakly prime, because it can be changed into another prime (140438421869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70219210929 + 70219210930.

It is an arithmetic number, because the mean of its divisors is an integer number (70219210930).

Almost surely, 2^140438421859 is an apocalyptic number.

140438421859 is a deficient number, since it is larger than the sum of its proper divisors (1).

140438421859 is an equidigital number, since it uses as much as digits as its factorization.

140438421859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 140438421859 in words is "one hundred forty billion, four hundred thirty-eight million, four hundred twenty-one thousand, eight hundred fifty-nine".