420453312329 has 2 divisors, whose sum is σ = 420453312330. Its totient is φ = 420453312328.

The previous prime is 420453312313. The next prime is 420453312343. The reversal of 420453312329 is 923213354024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247160111104 + 173293201225 = 497152^2 + 416285^2 .

It is a cyclic number.

It is not a de Polignac number, because 420453312329 - 2⁴ = 420453312313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420453312292 and 420453312301.

It is not a weakly prime, because it can be changed into another prime (420453314329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210226656164 + 210226656165.

It is an arithmetic number, because the mean of its divisors is an integer number (210226656165).

Almost surely, 2^420453312329 is an apocalyptic number.

It is an amenable number.

420453312329 is a deficient number, since it is larger than the sum of its proper divisors (1).

420453312329 is an equidigital number, since it uses as much as digits as its factorization.

420453312329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 420453312329 in words is "four hundred twenty billion, four hundred fifty-three million, three hundred twelve thousand, three hundred twenty-nine".