1348721 has 4 divisors (see below), whose sum is σ = 1471344. Its totient is φ = 1226100.

The previous prime is 1348673. The next prime is 1348727. The reversal of 1348721 is 1278431.

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 a de Polignac number, because none of the positive numbers 2^k-1348721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1348727) 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, 61295 + ... + 61316.

It is an arithmetic number, because the mean of its divisors is an integer number (367836).

2^1348721 is an apocalyptic number.

1348721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1348721 is a deficient number, since it is larger than the sum of its proper divisors (122623).

1348721 is a wasteful number, since it uses less digits than its factorization.

1348721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122622.

The product of its digits is 1344, while the sum is 26.

The square root of 1348721 is about 1161.3444794720. The cubic root of 1348721 is about 110.4860311437.

The spelling of 1348721 in words is "one million, three hundred forty-eight thousand, seven hundred twenty-one".