1273442 has 4 divisors (see below), whose sum is σ = 1910166. Its totient is φ = 636720.

The previous prime is 1273423. The next prime is 1273457. The reversal of 1273442 is 2443721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 271441 = 1001^2 + 521^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 318359 + ... + 318362.

2^1273442 is an apocalyptic number.

1273442 is a deficient number, since it is larger than the sum of its proper divisors (636724).

1273442 is an equidigital number, since it uses as much as digits as its factorization.

1273442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636723.

The product of its digits is 1344, while the sum is 23.

The square root of 1273442 is about 1128.4688741831. The cubic root of 1273442 is about 108.3909584285.

The spelling of 1273442 in words is "one million, two hundred seventy-three thousand, four hundred forty-two".