1330402040 has 128 divisors (see below), whose sum is σ = 3457209600. Its totient is φ = 455685120.

The previous prime is 1330402039. The next prime is 1330402043. The reversal of 1330402040 is 402040331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330402043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1947539 + ... + 1948221.

It is an arithmetic number, because the mean of its divisors is an integer number (27009450).

Almost surely, 2^1330402040 is an apocalyptic number.

1330402040 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 1330402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728604800).

1330402040 is an abundant number, since it is smaller than the sum of its proper divisors (2126807560).

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

1330402040 is a wasteful number, since it uses less digits than its factorization.

1330402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1330402040 is about 36474.6766949345. The cubic root of 1330402040 is about 1099.8352480529.

Adding to 1330402040 its reverse (402040331), we get a palindrome (1732442371).

The spelling of 1330402040 in words is "one billion, three hundred thirty million, four hundred two thousand, forty".