1209119040 has 336 divisors, whose sum is σ = 4450567680. Its totient is φ = 300625920.

The previous prime is 1209119029. The next prime is 1209119053. The reversal of 1209119040 is 409119021.

It is a junction number, because it is equal to n+sod(n) for n = 1209118995 and 1209119013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2588887 + ... + 2589353.

Almost surely, 2^1209119040 is an apocalyptic number.

1209119040 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 1209119040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2225283840).

1209119040 is an abundant number, since it is smaller than the sum of its proper divisors (3241448640).

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

1209119040 is a wasteful number, since it uses less digits than its factorization.

1209119040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1209119040 is about 34772.3890464834. The cubic root of 1209119040 is about 1065.3435643524.

The spelling of 1209119040 in words is "one billion, two hundred nine million, one hundred nineteen thousand, forty".