1301540240 has 160 divisors (see below), whose sum is σ = 4063239936. Its totient is φ = 374446080.

The previous prime is 1301540221. The next prime is 1301540243. The reversal of 1301540240 is 420451031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1301540243) 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, 71954 + ... + 88206.

Almost surely, 2^1301540240 is an apocalyptic number.

1301540240 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 1301540240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031619968).

1301540240 is an abundant number, since it is smaller than the sum of its proper divisors (2761699696).

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

1301540240 is a wasteful number, since it uses less digits than its factorization.

1301540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16297 (or 16291 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1301540240 is about 36076.8657175204. The cubic root of 1301540240 is about 1091.8237403752.

Adding to 1301540240 its reverse (420451031), we get a palindrome (1721991271).

The spelling of 1301540240 in words is "one billion, three hundred one million, five hundred forty thousand, two hundred forty".