1199087240 has 64 divisors (see below), whose sum is σ = 2917373760. Its totient is φ = 440928000.

The previous prime is 1199087209. The next prime is 1199087249. The reversal of 1199087240 is 427809911.

It is not an unprimeable number, because it can be changed into a prime (1199087249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125927 + ... + 135113.

It is an arithmetic number, because the mean of its divisors is an integer number (45583965).

Almost surely, 2^1199087240 is an apocalyptic number.

1199087240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199087240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458686880).

1199087240 is an abundant number, since it is smaller than the sum of its proper divisors (1718286520).

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

1199087240 is a wasteful number, since it uses less digits than its factorization.

1199087240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462 (or 9458 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1199087240 is about 34627.8390893801. The cubic root of 1199087240 is about 1062.3890696644.

The spelling of 1199087240 in words is "one billion, one hundred ninety-nine million, eighty-seven thousand, two hundred forty".