1135401040 has 80 divisors (see below), whose sum is σ = 2819105280. Its totient is φ = 424327680.

The previous prime is 1135401023. The next prime is 1135401121. The reversal of 1135401040 is 401045311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1135400999 and 1135401017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64027 + ... + 79813.

It is an arithmetic number, because the mean of its divisors is an integer number (35238816).

Almost surely, 2^1135401040 is an apocalyptic number.

1135401040 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 1135401040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409552640).

1135401040 is an abundant number, since it is smaller than the sum of its proper divisors (1683704240).

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

1135401040 is a wasteful number, since it uses less digits than its factorization.

1135401040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15860 (or 15854 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1135401040 is about 33695.7124869025. The cubic root of 1135401040 is about 1043.2372746053.

Adding to 1135401040 its reverse (401045311), we get a palindrome (1536446351).

The spelling of 1135401040 in words is "one billion, one hundred thirty-five million, four hundred one thousand, forty".