420303137 has 2 divisors, whose sum is σ = 420303138. Its totient is φ = 420303136.

The previous prime is 420303109. The next prime is 420303167. The reversal of 420303137 is 731303024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411116176 + 9186961 = 20276^2 + 3031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420303137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420303167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210151568 + 210151569.

It is an arithmetic number, because the mean of its divisors is an integer number (210151569).

Almost surely, 2^420303137 is an apocalyptic number.

It is an amenable number.

420303137 is a deficient number, since it is larger than the sum of its proper divisors (1).

420303137 is an equidigital number, since it uses as much as digits as its factorization.

420303137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 420303137 is about 20501.2959834250. The cubic root of 420303137 is about 749.0673663697.

The spelling of 420303137 in words is "four hundred twenty million, three hundred three thousand, one hundred thirty-seven".