1240133504 has 32 divisors (see below), whose sum is σ = 2578001040. Its totient is φ = 593105920.

The previous prime is 1240133501. The next prime is 1240133509. The reversal of 1240133504 is 4053310421.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1240133504² = 3075862215486636032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1240133504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240133501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207677 + ... + 213564.

Almost surely, 2^1240133504 is an apocalyptic number.

It is an amenable number.

1240133504 is an abundant number, since it is smaller than the sum of its proper divisors (1337867536).

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

1240133504 is an equidigital number, since it uses as much as digits as its factorization.

1240133504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421278 (or 421266 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1240133504 is about 35215.5293017157. The cubic root of 1240133504 is about 1074.3756255990.

Adding to 1240133504 its reverse (4053310421), we get a palindrome (5293443925).

The spelling of 1240133504 in words is "one billion, two hundred forty million, one hundred thirty-three thousand, five hundred four".