420203836 has 24 divisors (see below), whose sum is σ = 826356384. Its totient is φ = 185507520.

The previous prime is 420203831. The next prime is 420203837. The reversal of 420203836 is 638302024.

It is a super-2 number, since 2×420203836² = 353142527578229792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420203831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174475 + ... + 176866.

It is an arithmetic number, because the mean of its divisors is an integer number (34431516).

Almost surely, 2^420203836 is an apocalyptic number.

420203836 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

420203836 is a deficient number, since it is larger than the sum of its proper divisors (406152548).

420203836 is a wasteful number, since it uses less digits than its factorization.

420203836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351381 (or 351379 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 420203836 is about 20498.8740178577. The cubic root of 420203836 is about 749.0083700639.

The spelling of 420203836 in words is "four hundred twenty million, two hundred three thousand, eight hundred thirty-six".