1341200521 has 4 divisors (see below), whose sum is σ = 1341810432. Its totient is φ = 1340590612.

The previous prime is 1341200491. The next prime is 1341200527. The reversal of 1341200521 is 1250021431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1250021431 = 37 ⋅33784363.

It is a cyclic number.

It is not a de Polignac number, because 1341200521 - 2⁹ = 1341200009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1341200527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301645 + ... + 306058.

It is an arithmetic number, because the mean of its divisors is an integer number (335452608).

Almost surely, 2^1341200521 is an apocalyptic number.

It is an amenable number.

1341200521 is a deficient number, since it is larger than the sum of its proper divisors (609911).

1341200521 is an equidigital number, since it uses as much as digits as its factorization.

1341200521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609910.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1341200521 is about 36622.4046315913. The cubic root of 1341200521 is about 1102.8029127065.

Adding to 1341200521 its reverse (1250021431), we get a palindrome (2591221952).

The spelling of 1341200521 in words is "one billion, three hundred forty-one million, two hundred thousand, five hundred twenty-one".