1275438 has 8 divisors (see below), whose sum is σ = 2550888. Its totient is φ = 425144.

The previous prime is 1275437. The next prime is 1275457. The reversal of 1275438 is 8345721.

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

1275438 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275437) 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, 106281 + ... + 106292.

It is an arithmetic number, because the mean of its divisors is an integer number (318861).

2^1275438 is an apocalyptic number.

1275438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275438 is a wasteful number, since it uses less digits than its factorization.

1275438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212578.

The product of its digits is 6720, while the sum is 30.

The square root of 1275438 is about 1129.3529120696. The cubic root of 1275438 is about 108.4475597280.

It can be divided in two parts, 127 and 5438, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 1275438 in words is "one million, two hundred seventy-five thousand, four hundred thirty-eight".