420135711 has 4 divisors (see below), whose sum is σ = 560180952. Its totient is φ = 280090472.

The previous prime is 420135691. The next prime is 420135713. The reversal of 420135711 is 117531024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420135711 - 2⁶ = 420135647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420135713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70022616 + ... + 70022621.

It is an arithmetic number, because the mean of its divisors is an integer number (140045238).

Almost surely, 2^420135711 is an apocalyptic number.

420135711 is a deficient number, since it is larger than the sum of its proper divisors (140045241).

420135711 is a wasteful number, since it uses less digits than its factorization.

420135711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140045240.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 420135711 is about 20497.2122738679. The cubic root of 420135711 is about 748.9678905405.

Adding to 420135711 its reverse (117531024), we get a palindrome (537666735).

The spelling of 420135711 in words is "four hundred twenty million, one hundred thirty-five thousand, seven hundred eleven".