420321400423 has 2 divisors, whose sum is σ = 420321400424. Its totient is φ = 420321400422.

The previous prime is 420321400417. The next prime is 420321400453. The reversal of 420321400423 is 324004123024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420321400423 - 2⁵ = 420321400391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420321400453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210160700211 + 210160700212.

It is an arithmetic number, because the mean of its divisors is an integer number (210160700212).

Almost surely, 2^420321400423 is an apocalyptic number.

420321400423 is a deficient number, since it is larger than the sum of its proper divisors (1).

420321400423 is an equidigital number, since it uses as much as digits as its factorization.

420321400423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 420321400423 its reverse (324004123024), we get a palindrome (744325523447).

The spelling of 420321400423 in words is "four hundred twenty billion, three hundred twenty-one million, four hundred thousand, four hundred twenty-three".