420373223447 has 2 divisors, whose sum is σ = 420373223448. Its totient is φ = 420373223446.

The previous prime is 420373223419. The next prime is 420373223449. The reversal of 420373223447 is 744322373024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420373223447 - 2¹² = 420373219351 is a prime.

Together with 420373223449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420373223449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210186611723 + 210186611724.

It is an arithmetic number, because the mean of its divisors is an integer number (210186611724).

Almost surely, 2^420373223447 is an apocalyptic number.

420373223447 is a deficient number, since it is larger than the sum of its proper divisors (1).

420373223447 is an equidigital number, since it uses as much as digits as its factorization.

420373223447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 41.

The spelling of 420373223447 in words is "four hundred twenty billion, three hundred seventy-three million, two hundred twenty-three thousand, four hundred forty-seven".