1121534272 has 28 divisors (see below), whose sum is σ = 2267542836. Its totient is φ = 550184960.

The previous prime is 1121534233. The next prime is 1121534279. The reversal of 1121534272 is 2724351211.

It can be written as a sum of positive squares in 2 ways, for example, as 1032722496 + 88811776 = 32136^2 + 9424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121534272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121534279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161929 + ... + 168712.

Almost surely, 2^1121534272 is an apocalyptic number.

It is an amenable number.

1121534272 is an abundant number, since it is smaller than the sum of its proper divisors (1146008564).

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

1121534272 is an equidigital number, since it uses as much as digits as its factorization.

1121534272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330706 (or 330696 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 1121534272 is about 33489.3157887706. The cubic root of 1121534272 is about 1038.9728122306.

Adding to 1121534272 its reverse (2724351211), we get a palindrome (3845885483).

The spelling of 1121534272 in words is "one billion, one hundred twenty-one million, five hundred thirty-four thousand, two hundred seventy-two".