420343100 has 18 divisors (see below), whose sum is σ = 912144744. Its totient is φ = 168137200.

The previous prime is 420343093. The next prime is 420343109. The reversal of 420343100 is 1343024.

It is a super-2 number, since 2×420343100² = 353376643435220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2101616 + ... + 2101815.

It is an arithmetic number, because the mean of its divisors is an integer number (50674708).

Almost surely, 2^420343100 is an apocalyptic number.

It is an amenable number.

420343100 is an abundant number, since it is smaller than the sum of its proper divisors (491801644).

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

420343100 is a wasteful number, since it uses less digits than its factorization.

420343100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203445 (or 4203438 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 420343100 is about 20502.2706059597. The cubic root of 420343100 is about 749.0911064022.

Adding to 420343100 its reverse (1343024), we get a palindrome (421686124).

The spelling of 420343100 in words is "four hundred twenty million, three hundred forty-three thousand, one hundred".