1300240421 has 16 divisors (see below), whose sum is σ = 1375349808. Its totient is φ = 1227571200.

The previous prime is 1300240363. The next prime is 1300240429. The reversal of 1300240421 is 1240420031.

It can be written as a sum of positive squares in 8 ways, for example, as 77968900 + 1222271521 = 8830^2 + 34961^2 .

It is not a de Polignac number, because 1300240421 - 2¹⁰ = 1300239397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1300240421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300240429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290561 + ... + 295001.

It is an arithmetic number, because the mean of its divisors is an integer number (85959363).

Almost surely, 2^1300240421 is an apocalyptic number.

It is an amenable number.

1300240421 is a deficient number, since it is larger than the sum of its proper divisors (75109387).

1300240421 is a wasteful number, since it uses less digits than its factorization.

1300240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1300240421 is about 36058.8466399024. The cubic root of 1300240421 is about 1091.4601593674.

Adding to 1300240421 its reverse (1240420031), we get a palindrome (2540660452).

The spelling of 1300240421 in words is "one billion, three hundred million, two hundred forty thousand, four hundred twenty-one".