1189342240 has 48 divisors (see below), whose sum is σ = 2957713920. Its totient is φ = 450696960.

The previous prime is 1189342201. The next prime is 1189342247. The reversal of 1189342240 is 422439811.

It is a junction number, because it is equal to n+sod(n) for n = 1189342196 and 1189342205.

It is not an unprimeable number, because it can be changed into a prime (1189342247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192576 + ... + 198655.

It is an arithmetic number, because the mean of its divisors is an integer number (61619040).

Almost surely, 2^1189342240 is an apocalyptic number.

1189342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189342240 is an abundant number, since it is smaller than the sum of its proper divisors (1768371680).

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

1189342240 is a wasteful number, since it uses less digits than its factorization.

1189342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391265 (or 391257 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1189342240 is about 34486.8415486255. The cubic root of 1189342240 is about 1059.5032204018.

The spelling of 1189342240 in words is "one billion, one hundred eighty-nine million, three hundred forty-two thousand, two hundred forty".