1396121 has 8 divisors (see below), whose sum is σ = 1452360. Its totient is φ = 1340928.

The previous prime is 1396103. The next prime is 1396127. The reversal of 1396121 is 1216931.

1396121 = 835² + 836².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 270400 + 1125721 = 520^2 + 1061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1396121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (181545).

2^1396121 is an apocalyptic number.

1396121 is the 836-th centered square number.

It is an amenable number.

1396121 is a deficient number, since it is larger than the sum of its proper divisors (56239).

1396121 is an equidigital number, since it uses as much as digits as its factorization.

1396121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its digits is 324, while the sum is 23.

The square root of 1396121 is about 1181.5756429446. The cubic root of 1396121 is about 111.7654797242.

The spelling of 1396121 in words is "one million, three hundred ninety-six thousand, one hundred twenty-one".