1009434240 has 192 divisors, whose sum is σ = 3509312040. Its totient is φ = 267362304.

The previous prime is 1009434203. The next prime is 1009434241. The reversal of 1009434240 is 424349001.

It can be written as a sum of positive squares in 4 ways, for example, as 693163584 + 316270656 = 26328^2 + 17784^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009434241) 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, 995974 + ... + 996986.

Almost surely, 2^1009434240 is an apocalyptic number.

1009434240 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 1009434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1754656020).

1009434240 is an abundant number, since it is smaller than the sum of its proper divisors (2499877800).

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

1009434240 is a wasteful number, since it uses less digits than its factorization.

1009434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1009434240 is about 31771.5948608187. The cubic root of 1009434240 is about 1003.1349087442.

The spelling of 1009434240 in words is "one billion, nine million, four hundred thirty-four thousand, two hundred forty".