1380273 has 4 divisors (see below), whose sum is σ = 1840368. Its totient is φ = 920180.

The previous prime is 1380271. The next prime is 1380277. The reversal of 1380273 is 3720831.

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 1380273 - 2¹ = 1380271 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1380271) 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 3 ways as a sum of consecutive naturals, for example, 230043 + ... + 230048.

It is an arithmetic number, because the mean of its divisors is an integer number (460092).

2^1380273 is an apocalyptic number.

It is an amenable number.

1380273 is a deficient number, since it is larger than the sum of its proper divisors (460095).

1380273 is an equidigital number, since it uses as much as digits as its factorization.

1380273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460094.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1380273 is about 1174.8502032174. The cubic root of 1380273 is about 111.3409692334.

It can be divided in two parts, 1380 and 273, that added together give a triangular number (1653 = T₅₇).

The spelling of 1380273 in words is "one million, three hundred eighty thousand, two hundred seventy-three".