421434244432433 has 2 divisors, whose sum is σ = 421434244432434. Its totient is φ = 421434244432432.

The previous prime is 421434244432349. The next prime is 421434244432519. The reversal of 421434244432433 is 334234442434124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304673080182769 + 116761164249664 = 17454887^2 + 10805608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421434244432433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (421434244432933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210717122216216 + 210717122216217.

It is an arithmetic number, because the mean of its divisors is an integer number (210717122216217).

Almost surely, 2^{421434244432433} is an apocalyptic number.

It is an amenable number.

421434244432433 is a deficient number, since it is larger than the sum of its proper divisors (1).

421434244432433 is an equidigital number, since it uses as much as digits as its factorization.

421434244432433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10616832, while the sum is 47.

Adding to 421434244432433 its reverse (334234442434124), we get a palindrome (755668686866557).

The spelling of 421434244432433 in words is "four hundred twenty-one trillion, four hundred thirty-four billion, two hundred forty-four million, four hundred thirty-two thousand, four hundred thirty-three".