1272278 has 16 divisors (see below), whose sum is σ = 2296320. Its totient is φ = 516456.

The previous prime is 1272269. The next prime is 1272281. The reversal of 1272278 is 8722721.

It is a self number, because there is not a number n which added to its sum of digits gives 1272278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (143520).

2^1272278 is an apocalyptic number.

1272278 is a deficient number, since it is larger than the sum of its proper divisors (1024042).

1272278 is a wasteful number, since it uses less digits than its factorization.

1272278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811.

The product of its digits is 3136, while the sum is 29.

The square root of 1272278 is about 1127.9530132058. The cubic root of 1272278 is about 108.3579231492.

Adding to 1272278 its reverse (8722721), we get a palindrome (9994999).

The spelling of 1272278 in words is "one million, two hundred seventy-two thousand, two hundred seventy-eight".