420263507 has 2 divisors, whose sum is σ = 420263508. Its totient is φ = 420263506.

The previous prime is 420263401. The next prime is 420263513. The reversal of 420263507 is 705362024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420263507 - 2¹⁰ = 420262483 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420263507.

It is not a weakly prime, because it can be changed into another prime (420265507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210131753 + 210131754.

It is an arithmetic number, because the mean of its divisors is an integer number (210131754).

Almost surely, 2^420263507 is an apocalyptic number.

420263507 is a deficient number, since it is larger than the sum of its proper divisors (1).

420263507 is an equidigital number, since it uses as much as digits as its factorization.

420263507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 420263507 is about 20500.3294363774. The cubic root of 420263507 is about 749.0438226698.

The spelling of 420263507 in words is "four hundred twenty million, two hundred sixty-three thousand, five hundred seven".