1020421224 has 48 divisors (see below), whose sum is σ = 2838341220. Its totient is φ = 330946560.

The previous prime is 1020421219. The next prime is 1020421247. The reversal of 1020421224 is 4221240201.

1020421224 is a `hidden beast` number, since 1 + 0 + 20 + 421 + 224 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 865418724 + 155002500 = 29418^2 + 12450^2 .

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 = 1020421197 and 1020421206.

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, 188857 + ... + 194184.

Almost surely, 2^1020421224 is an apocalyptic number.

It is an amenable number.

1020421224 is an abundant number, since it is smaller than the sum of its proper divisors (1817919996).

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

1020421224 is a wasteful number, since it uses less digits than its factorization.

1020421224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383090 (or 383083 counting only the distinct ones).

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

The square root of 1020421224 is about 31944.0326821771. The cubic root of 1020421224 is about 1006.7612570405.

Adding to 1020421224 its reverse (4221240201), we get a palindrome (5241661425).

The spelling of 1020421224 in words is "one billion, twenty million, four hundred twenty-one thousand, two hundred twenty-four".