420321151 has 2 divisors, whose sum is σ = 420321152. Its totient is φ = 420321150.

The previous prime is 420321137. The next prime is 420321163. The reversal of 420321151 is 151123024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420321151 - 2⁵ = 420321119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420321191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210160575 + 210160576.

It is an arithmetic number, because the mean of its divisors is an integer number (210160576).

Almost surely, 2^420321151 is an apocalyptic number.

420321151 is a deficient number, since it is larger than the sum of its proper divisors (1).

420321151 is an equidigital number, since it uses as much as digits as its factorization.

420321151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 420321151 is about 20501.7353167970. The cubic root of 420321151 is about 749.0780677783.

Adding to 420321151 its reverse (151123024), we get a palindrome (571444175).

The spelling of 420321151 in words is "four hundred twenty million, three hundred twenty-one thousand, one hundred fifty-one".