421010424 has 48 divisors (see below), whose sum is σ = 1144497120. Its totient is φ = 139812480.

The previous prime is 421010419. The next prime is 421010437. The reversal of 421010424 is 424010124.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 421010397 and 421010406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8724 + ... + 30300.

It is an arithmetic number, because the mean of its divisors is an integer number (23843690).

Almost surely, 2^421010424 is an apocalyptic number.

It is an amenable number.

421010424 is an abundant number, since it is smaller than the sum of its proper divisors (723486696).

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

421010424 is a wasteful number, since it uses less digits than its factorization.

421010424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21860 (or 21853 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 421010424 is about 20518.5385444480. The cubic root of 421010424 is about 749.4873082761.

Adding to 421010424 its reverse (424010124), we get a palindrome (845020548).

The spelling of 421010424 in words is "four hundred twenty-one million, ten thousand, four hundred twenty-four".