1121430660 has 72 divisors (see below), whose sum is σ = 3652669440. Its totient is φ = 256326336.

The previous prime is 1121430659. The next prime is 1121430671. The reversal of 1121430660 is 660341211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121430660.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187780 + ... + 193659.

It is an arithmetic number, because the mean of its divisors is an integer number (50731520).

Almost surely, 2^1121430660 is an apocalyptic number.

1121430660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121430660 is an abundant number, since it is smaller than the sum of its proper divisors (2531238780).

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

1121430660 is a wasteful number, since it uses less digits than its factorization.

1121430660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381465 (or 381456 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1121430660 is about 33487.7688119110. The cubic root of 1121430660 is about 1038.9408163690.

Adding to 1121430660 its reverse (660341211), we get a palindrome (1781771871).

The spelling of 1121430660 in words is "one billion, one hundred twenty-one million, four hundred thirty thousand, six hundred sixty".