420266137 has 2 divisors, whose sum is σ = 420266138. Its totient is φ = 420266136.

The previous prime is 420266123. The next prime is 420266153. The reversal of 420266137 is 731662024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418775296 + 1490841 = 20464^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 420266137 - 2¹⁵ = 420233369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420266099 and 420266108.

It is not a weakly prime, because it can be changed into another prime (420266167) 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, 210133068 + 210133069.

It is an arithmetic number, because the mean of its divisors is an integer number (210133069).

Almost surely, 2^420266137 is an apocalyptic number.

It is an amenable number.

420266137 is a deficient number, since it is larger than the sum of its proper divisors (1).

420266137 is an equidigital number, since it uses as much as digits as its factorization.

420266137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 420266137 is about 20500.3935815876. The cubic root of 420266137 is about 749.0453851666.

The spelling of 420266137 in words is "four hundred twenty million, two hundred sixty-six thousand, one hundred thirty-seven".