1530120340 has 96 divisors (see below), whose sum is σ = 3762259200. Its totient is φ = 511902720.

The previous prime is 1530120271. The next prime is 1530120373. The reversal of 1530120340 is 430210351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1186416 + ... + 1187704.

It is an arithmetic number, because the mean of its divisors is an integer number (39190200).

Almost surely, 2^1530120340 is an apocalyptic number.

1530120340 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 1530120340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881129600).

1530120340 is an abundant number, since it is smaller than the sum of its proper divisors (2232138860).

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

1530120340 is a wasteful number, since it uses less digits than its factorization.

1530120340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1530120340 is about 39116.7526770820. The cubic root of 1530120340 is about 1152.3255624430.

Adding to 1530120340 its reverse (430210351), we get a palindrome (1960330691).

The spelling of 1530120340 in words is "one billion, five hundred thirty million, one hundred twenty thousand, three hundred forty".