140421833 has 2 divisors, whose sum is σ = 140421834. Its totient is φ = 140421832.

The previous prime is 140421811. The next prime is 140421859. The reversal of 140421833 is 338124041.

140421833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (140421859) can be obtained adding 140421833 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 19245769 = 11008^2 + 4387^2 .

It is an emirp because it is prime and its reverse (338124041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140421833 - 2²⁰ = 139373257 is a prime.

It is not a weakly prime, because it can be changed into another prime (140421893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70210916 + 70210917.

It is an arithmetic number, because the mean of its divisors is an integer number (70210917).

Almost surely, 2^140421833 is an apocalyptic number.

It is an amenable number.

140421833 is a deficient number, since it is larger than the sum of its proper divisors (1).

140421833 is an equidigital number, since it uses as much as digits as its factorization.

140421833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 140421833 is about 11849.9718565067. The cubic root of 140421833 is about 519.7704028315.

Adding to 140421833 its reverse (338124041), we get a palindrome (478545874).

The spelling of 140421833 in words is "one hundred forty million, four hundred twenty-one thousand, eight hundred thirty-three".