1300040001 has 24 divisors (see below), whose sum is σ = 2027164776. Its totient is φ = 798094080.

The previous prime is 1300039987. The next prime is 1300040003. The reversal of 1300040001 is 1000400031.

It can be written as a sum of positive squares in 4 ways, for example, as 47941776 + 1252098225 = 6924^2 + 35385^2 .

It is not a de Polignac number, because 1300040001 - 2¹¹ = 1300037953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1300040003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36061 + ... + 62453.

It is an arithmetic number, because the mean of its divisors is an integer number (84465199).

Almost surely, 2^1300040001 is an apocalyptic number.

It is an amenable number.

1300040001 is a deficient number, since it is larger than the sum of its proper divisors (727124775).

1300040001 is a wasteful number, since it uses less digits than its factorization.

1300040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26833 (or 26830 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1300040001 is about 36056.0674644366. The cubic root of 1300040001 is about 1091.4040769993.

Adding to 1300040001 its reverse (1000400031), we get a palindrome (2300440032).

The spelling of 1300040001 in words is "one billion, three hundred million, forty thousand, one".