420031000 has 64 divisors (see below), whose sum is σ = 989820000. Its totient is φ = 166825600.

The previous prime is 420030911. The next prime is 420031033. The reversal of 420031000 is 130024.

It is a super-2 number, since 2×420031000² = 352852081922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147591 + ... + 150409.

Almost surely, 2^420031000 is an apocalyptic number.

420031000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494910000).

420031000 is an abundant number, since it is smaller than the sum of its proper divisors (569789000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420031000 is a wasteful number, since it uses less digits than its factorization.

420031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989 (or 2975 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 420031000 is about 20494.6578405203. The cubic root of 420031000 is about 748.9056632720.

Adding to 420031000 its reverse (130024), we get a palindrome (420161024).

The spelling of 420031000 in words is "four hundred twenty million, thirty-one thousand".