1240133340 has 96 divisors (see below), whose sum is σ = 3699682560. Its totient is φ = 309298176.

The previous prime is 1240133333. The next prime is 1240133347. The reversal of 1240133340 is 433310421.

It is an interprime number because it is at equal distance from previous prime (1240133333) and next prime (1240133347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240133347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162531 + ... + 169989.

It is an arithmetic number, because the mean of its divisors is an integer number (38538360).

Almost surely, 2^1240133340 is an apocalyptic number.

1240133340 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 1240133340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849841280).

1240133340 is an abundant number, since it is smaller than the sum of its proper divisors (2459549220).

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

1240133340 is a wasteful number, since it uses less digits than its factorization.

1240133340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651 (or 7649 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1240133340 is about 35215.5269731975. The cubic root of 1240133340 is about 1074.3755782391.

Adding to 1240133340 its reverse (433310421), we get a palindrome (1673443761).

The spelling of 1240133340 in words is "one billion, two hundred forty million, one hundred thirty-three thousand, three hundred forty".