420835031 has 4 divisors (see below), whose sum is σ = 424920912. Its totient is φ = 416749152.

The previous prime is 420835027. The next prime is 420835033. The reversal of 420835031 is 130538024.

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 420835031 - 2² = 420835027 is a prime.

It is a super-2 number, since 2×420835031² = 354204246633541922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420835033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042786 + ... + 2042991.

It is an arithmetic number, because the mean of its divisors is an integer number (106230228).

Almost surely, 2^420835031 is an apocalyptic number.

420835031 is a deficient number, since it is larger than the sum of its proper divisors (4085881).

420835031 is a wasteful number, since it uses less digits than its factorization.

420835031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085880.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 420835031 is about 20514.2640862401. The cubic root of 420835031 is about 749.3832149814.

The spelling of 420835031 in words is "four hundred twenty million, eight hundred thirty-five thousand, thirty-one".