140421859 has 2 divisors, whose sum is σ = 140421860. Its totient is φ = 140421858.

The previous prime is 140421833. The next prime is 140421893. The reversal of 140421859 is 958124041.

It is a happy number.

It is an a-pointer prime, because the next prime (140421893) can be obtained adding 140421859 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140421859 - 2²⁷ = 6204131 is a prime.

It is not a weakly prime, because it can be changed into another prime (140421959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70210929 + 70210930.

It is an arithmetic number, because the mean of its divisors is an integer number (70210930).

Almost surely, 2^140421859 is an apocalyptic number.

140421859 is a deficient number, since it is larger than the sum of its proper divisors (1).

140421859 is an equidigital number, since it uses as much as digits as its factorization.

140421859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 140421859 is about 11849.9729535556. The cubic root of 140421859 is about 519.7704349111.

The spelling of 140421859 in words is "one hundred forty million, four hundred twenty-one thousand, eight hundred fifty-nine".