1121299640 has 16 divisors (see below), whose sum is σ = 2522924280. Its totient is φ = 448519840.

The previous prime is 1121299639. The next prime is 1121299681. The reversal of 1121299640 is 469921211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121299640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14016206 + ... + 14016285.

Almost surely, 2^1121299640 is an apocalyptic number.

1121299640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121299640 is an abundant number, since it is smaller than the sum of its proper divisors (1401624640).

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

1121299640 is a wasteful number, since it uses less digits than its factorization.

1121299640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28032502 (or 28032498 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1121299640 is about 33485.8125181397. The cubic root of 1121299640 is about 1038.9003539691.

The spelling of 1121299640 in words is "one billion, one hundred twenty-one million, two hundred ninety-nine thousand, six hundred forty".