140412430421 has 2 divisors, whose sum is σ = 140412430422. Its totient is φ = 140412430420.

The previous prime is 140412430391. The next prime is 140412430441. The reversal of 140412430421 is 124034214041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112653538321 + 27758892100 = 335639^2 + 166610^2 .

It is an emirp because it is prime and its reverse (124034214041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140412430421 - 2¹⁸ = 140412168277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140412430441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70206215210 + 70206215211.

It is an arithmetic number, because the mean of its divisors is an integer number (70206215211).

Almost surely, 2^140412430421 is an apocalyptic number.

It is an amenable number.

140412430421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140412430421 is an equidigital number, since it uses as much as digits as its factorization.

140412430421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 140412430421 its reverse (124034214041), we get a palindrome (264446644462).

The spelling of 140412430421 in words is "one hundred forty billion, four hundred twelve million, four hundred thirty thousand, four hundred twenty-one".