1356241 has 4 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 1297252.

The previous prime is 1356227. The next prime is 1356247. The reversal of 1356241 is 1426531.

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: 1426531 = 223 ⋅6397.

It is a cyclic number.

It is not a de Polignac number, because 1356241 - 2¹¹ = 1354193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356247) 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, 29461 + ... + 29506.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

2^1356241 is an apocalyptic number.

It is an amenable number.

1356241 is a deficient number, since it is larger than the sum of its proper divisors (58991).

1356241 is an equidigital number, since it uses as much as digits as its factorization.

1356241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58990.

The product of its digits is 720, while the sum is 22.

The square root of 1356241 is about 1164.5776058297. The cubic root of 1356241 is about 110.6909945951.

The spelling of 1356241 in words is "one million, three hundred fifty-six thousand, two hundred forty-one".