420234511 has 2 divisors, whose sum is σ = 420234512. Its totient is φ = 420234510.

The previous prime is 420234497. The next prime is 420234527. The reversal of 420234511 is 115432024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420234511 - 2⁷ = 420234383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420234811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210117255 + 210117256.

It is an arithmetic number, because the mean of its divisors is an integer number (210117256).

Almost surely, 2^420234511 is an apocalyptic number.

420234511 is a deficient number, since it is larger than the sum of its proper divisors (1).

420234511 is an equidigital number, since it uses as much as digits as its factorization.

420234511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420234511 is about 20499.6222160312. The cubic root of 420234511 is about 749.0265955620.

Adding to 420234511 its reverse (115432024), we get a palindrome (535666535).

The spelling of 420234511 in words is "four hundred twenty million, two hundred thirty-four thousand, five hundred eleven".