420418831 has 8 divisors (see below), whose sum is σ = 482253824. Its totient is φ = 359027640.

The previous prime is 420418799. The next prime is 420418841. The reversal of 420418831 is 138814024.

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

It is a cyclic number.

It is not a de Polignac number, because 420418831 - 2⁵ = 420418799 is a prime.

It is a super-2 number, since 2×420418831² = 353503986918813122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420418793 and 420418802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420418841) 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, 108915 + ... + 112708.

It is an arithmetic number, because the mean of its divisors is an integer number (60281728).

Almost surely, 2^420418831 is an apocalyptic number.

420418831 is a deficient number, since it is larger than the sum of its proper divisors (61834993).

420418831 is a wasteful number, since it uses less digits than its factorization.

420418831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221901.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 420418831 is about 20504.1174157777. The cubic root of 420418831 is about 749.1360902992.

The spelling of 420418831 in words is "four hundred twenty million, four hundred eighteen thousand, eight hundred thirty-one".