420651337 has 2 divisors, whose sum is σ = 420651338. Its totient is φ = 420651336.

The previous prime is 420651323. The next prime is 420651359. The reversal of 420651337 is 733156024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408686656 + 11964681 = 20216^2 + 3459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420651337 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 420651299 and 420651308.

It is not a weakly prime, because it can be changed into another prime (420651377) 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, 210325668 + 210325669.

It is an arithmetic number, because the mean of its divisors is an integer number (210325669).

Almost surely, 2^420651337 is an apocalyptic number.

It is an amenable number.

420651337 is a deficient number, since it is larger than the sum of its proper divisors (1).

420651337 is an equidigital number, since it uses as much as digits as its factorization.

420651337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 420651337 is about 20509.7863713887. The cubic root of 420651337 is about 749.2741641467.

The spelling of 420651337 in words is "four hundred twenty million, six hundred fifty-one thousand, three hundred thirty-seven".