1348561421 has 4 divisors (see below), whose sum is σ = 1355622144. Its totient is φ = 1341500700.

The previous prime is 1348561367. The next prime is 1348561427. The reversal of 1348561421 is 1241658431.

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.

It is a cyclic number.

It is not a de Polignac number, because 1348561421 - 2²² = 1344367117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1348561427) 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, 3530075 + ... + 3530456.

It is an arithmetic number, because the mean of its divisors is an integer number (338905536).

Almost surely, 2^1348561421 is an apocalyptic number.

It is an amenable number.

1348561421 is a deficient number, since it is larger than the sum of its proper divisors (7060723).

1348561421 is an equidigital number, since it uses as much as digits as its factorization.

1348561421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060722.

The product of its digits is 23040, while the sum is 35.

The square root of 1348561421 is about 36722.7643431156. The cubic root of 1348561421 is about 1104.8167344834.

The spelling of 1348561421 in words is "one billion, three hundred forty-eight million, five hundred sixty-one thousand, four hundred twenty-one".