210124420 has 96 divisors (see below), whose sum is σ = 536699520. Its totient is φ = 68106240.

The previous prime is 210124391. The next prime is 210124433. The reversal of 210124420 is 24421012.

It is a junction number, because it is equal to n+sod(n) for n = 210124394 and 210124403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69582 + ... + 72538.

It is an arithmetic number, because the mean of its divisors is an integer number (5590620).

Almost surely, 2^210124420 is an apocalyptic number.

210124420 is a gapful number since it is divisible by the number (20) 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 210124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268349760).

210124420 is an abundant number, since it is smaller than the sum of its proper divisors (326575100).

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

210124420 is a wasteful number, since it uses less digits than its factorization.

210124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3011 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 210124420 is about 14495.6690083625. The cubic root of 210124420 is about 594.5095598420.

Adding to 210124420 its reverse (24421012), we get a palindrome (234545432).

The spelling of 210124420 in words is "two hundred ten million, one hundred twenty-four thousand, four hundred twenty".