1121323450 has 36 divisors (see below), whose sum is σ = 2258455338. Its totient is φ = 414024000.

The previous prime is 1121323429. The next prime is 1121323459. The reversal of 1121323450 is 543231211.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 881721 + 1120441729 = 939^2 + 33473^2 .

It is not an unprimeable number, because it can be changed into a prime (1121323459) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57901 + ... + 74800.

Almost surely, 2^1121323450 is an apocalyptic number.

1121323450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121323450 is an abundant number, since it is smaller than the sum of its proper divisors (1137131888).

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

1121323450 is a wasteful number, since it uses less digits than its factorization.

1121323450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132739 (or 132721 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1121323450 is about 33486.1680399535. The cubic root of 1121323450 is about 1038.9077073537.

Adding to 1121323450 its reverse (543231211), we get a palindrome (1664554661).

The spelling of 1121323450 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, four hundred fifty".