1393121 has 2 divisors, whose sum is σ = 1393122. Its totient is φ = 1393120.

The previous prime is 1393103. The next prime is 1393123. The reversal of 1393121 is 1213931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079521 + 313600 = 1039^2 + 560^2 .

It is an emirp because it is prime and its reverse (1213931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1393121 - 2¹⁴ = 1376737 is a prime.

It is a super-2 number, since 2×1393121² = 3881572241282, which contains 22 as substring.

Together with 1393123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1393093 and 1393102.

It is not a weakly prime, because it can be changed into another prime (1393123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696560 + 696561.

It is an arithmetic number, because the mean of its divisors is an integer number (696561).

2^1393121 is an apocalyptic number.

It is an amenable number.

1393121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393121 is an equidigital number, since it uses as much as digits as its factorization.

1393121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 20.

The square root of 1393121 is about 1180.3054689359. The cubic root of 1393121 is about 111.6853680220.

The spelling of 1393121 in words is "one million, three hundred ninety-three thousand, one hundred twenty-one".