1199877120 has 264 divisors, whose sum is σ = 4479589296. Its totient is φ = 295206912.

The previous prime is 1199877109. The next prime is 1199877121. The reversal of 1199877120 is 217789911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1199877121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 598039 + ... + 600041.

Almost surely, 2^1199877120 is an apocalyptic number.

1199877120 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 1199877120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239794648).

1199877120 is an abundant number, since it is smaller than the sum of its proper divisors (3279712176).

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

1199877120 is a wasteful number, since it uses less digits than its factorization.

1199877120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

The square root of 1199877120 is about 34639.2424859436. The cubic root of 1199877120 is about 1062.6222958653.

The spelling of 1199877120 in words is "one billion, one hundred ninety-nine million, eight hundred seventy-seven thousand, one hundred twenty".