420111420 has 48 divisors (see below), whose sum is σ = 1205009568. Its totient is φ = 109296640.

The previous prime is 420111409. The next prime is 420111437. The reversal of 420111420 is 24111024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 420111420.

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, 82929 + ... + 87848.

It is an arithmetic number, because the mean of its divisors is an integer number (25104366).

Almost surely, 2^420111420 is an apocalyptic number.

It is an amenable number.

420111420 is an abundant number, since it is smaller than the sum of its proper divisors (784898148).

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

420111420 is a wasteful number, since it uses less digits than its factorization.

420111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170830 (or 170828 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 420111420 is about 20496.6197213101. The cubic root of 420111420 is about 748.9534558954.

Adding to 420111420 its reverse (24111024), we get a palindrome (444222444).

The spelling of 420111420 in words is "four hundred twenty million, one hundred eleven thousand, four hundred twenty".