420152231 has 8 divisors (see below), whose sum is σ = 422547840. Its totient is φ = 417763192.

The previous prime is 420152177. The next prime is 420152233. The reversal of 420152231 is 132251024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420152231 is a prime.

It is a super-2 number, since 2×420152231² = 353055794428554722, 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 (420152233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178460 + ... + 180798.

It is an arithmetic number, because the mean of its divisors is an integer number (52818480).

Almost surely, 2^420152231 is an apocalyptic number.

420152231 is a deficient number, since it is larger than the sum of its proper divisors (2395609).

420152231 is a wasteful number, since it uses less digits than its factorization.

420152231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 420152231 is about 20497.6152515360. The cubic root of 420152231 is about 748.9777070411.

The spelling of 420152231 in words is "four hundred twenty million, one hundred fifty-two thousand, two hundred thirty-one".