140223421023421 has 2 divisors, whose sum is σ = 140223421023422. Its totient is φ = 140223421023420.

The previous prime is 140223421023409. The next prime is 140223421023431. The reversal of 140223421023421 is 124320124322041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107770870625625 + 32452550397796 = 10381275^2 + 5696714^2 .

It is a cyclic number.

It is not a de Polignac number, because 140223421023421 - 2¹⁷ = 140223420892349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140223421023431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70111710511710 + 70111710511711.

It is an arithmetic number, because the mean of its divisors is an integer number (70111710511711).

Almost surely, 2^{140223421023421} is an apocalyptic number.

It is an amenable number.

140223421023421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140223421023421 is an equidigital number, since it uses as much as digits as its factorization.

140223421023421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140223421023421 its reverse (124320124322041), we get a palindrome (264543545345462).

The spelling of 140223421023421 in words is "one hundred forty trillion, two hundred twenty-three billion, four hundred twenty-one million, twenty-three thousand, four hundred twenty-one".