1121340402 has 128 divisors (see below), whose sum is σ = 3130176000. Its totient is φ = 295674624.

The previous prime is 1121340331. The next prime is 1121340403. The reversal of 1121340402 is 2040431211.

1121340402 is a `hidden beast` number, since 11 + 213 + 40 + 402 = 666.

1121340402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1121340403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 238458 + ... + 243114.

It is an arithmetic number, because the mean of its divisors is an integer number (24454500).

Almost surely, 2^1121340402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121340402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565088000).

1121340402 is an abundant number, since it is smaller than the sum of its proper divisors (2008835598).

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

1121340402 is a wasteful number, since it uses less digits than its factorization.

1121340402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1121340402 is about 33486.4211584338. The cubic root of 1121340402 is about 1038.9129426777.

Adding to 1121340402 its reverse (2040431211), we get a palindrome (3161771613).

It can be divided in two parts, 11213 and 40402, that added together give a palindrome (51615).

The spelling of 1121340402 in words is "one billion, one hundred twenty-one million, three hundred forty thousand, four hundred two".