1380121 has 4 divisors (see below), whose sum is σ = 1388752. Its totient is φ = 1371492.

The previous prime is 1380083. The next prime is 1380149. The reversal of 1380121 is 1210831.

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 1380121 - 2⁷ = 1379993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1380095 and 1380104.

It is not an unprimeable number, because it can be changed into a prime (1380221) 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, 4071 + ... + 4396.

It is an arithmetic number, because the mean of its divisors is an integer number (347188).

2^1380121 is an apocalyptic number.

It is an amenable number.

1380121 is a deficient number, since it is larger than the sum of its proper divisors (8631).

1380121 is an equidigital number, since it uses as much as digits as its factorization.

1380121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8630.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1380121 is about 1174.7855123383. The cubic root of 1380121 is about 111.3368820109.

Adding to 1380121 its reverse (1210831), we get a palindrome (2590952).

The spelling of 1380121 in words is "one million, three hundred eighty thousand, one hundred twenty-one".