1040133556 has 48 divisors (see below), whose sum is σ = 2287337472. Its totient is φ = 402040800.

The previous prime is 1040133553. The next prime is 1040133557. The reversal of 1040133556 is 6553310401.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040133553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25821 + ... + 52411.

It is an arithmetic number, because the mean of its divisors is an integer number (47652864).

Almost surely, 2^1040133556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040133556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143668736).

1040133556 is an abundant number, since it is smaller than the sum of its proper divisors (1247203916).

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

1040133556 is a wasteful number, since it uses less digits than its factorization.

1040133556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26740 (or 26738 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1040133556 is about 32251.1016245957. The cubic root of 1040133556 is about 1013.2027716809.

Adding to 1040133556 its reverse (6553310401), we get a palindrome (7593443957).

The spelling of 1040133556 in words is "one billion, forty million, one hundred thirty-three thousand, five hundred fifty-six".