1121620424 has 64 divisors (see below), whose sum is σ = 2310819840. Its totient is φ = 508078080.

The previous prime is 1121620391. The next prime is 1121620429. The reversal of 1121620424 is 4240261211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121620424.

It is not an unprimeable number, because it can be changed into a prime (1121620429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 939572 + ... + 940764.

It is an arithmetic number, because the mean of its divisors is an integer number (36106560).

Almost surely, 2^1121620424 is an apocalyptic number.

It is an amenable number.

1121620424 is an abundant number, since it is smaller than the sum of its proper divisors (1189199416).

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

1121620424 is a wasteful number, since it uses less digits than its factorization.

1121620424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1121620424 is about 33490.6020250458. The cubic root of 1121620424 is about 1038.9994148636. Note that the first 3 decimals are identical.

Adding to 1121620424 its reverse (4240261211), we get a palindrome (5361881635).

The spelling of 1121620424 in words is "one billion, one hundred twenty-one million, six hundred twenty thousand, four hundred twenty-four".