1272455 has 4 divisors (see below), whose sum is σ = 1526952. Its totient is φ = 1017960.

The previous prime is 1272451. The next prime is 1272461. The reversal of 1272455 is 5542721.

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

It is not a de Polignac number, because 1272455 - 2² = 1272451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272451) 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, 127241 + ... + 127250.

It is an arithmetic number, because the mean of its divisors is an integer number (381738).

2^1272455 is an apocalyptic number.

1272455 is a deficient number, since it is larger than the sum of its proper divisors (254497).

1272455 is an equidigital number, since it uses as much as digits as its factorization.

1272455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254496.

The product of its digits is 2800, while the sum is 26.

The square root of 1272455 is about 1128.0314711922. The cubic root of 1272455 is about 108.3629478537.

The spelling of 1272455 in words is "one million, two hundred seventy-two thousand, four hundred fifty-five".