1272724 has 6 divisors (see below), whose sum is σ = 2227274. Its totient is φ = 636360.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272724 is 4272721.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 232324 = 1020^2 + 482^2 .

It is a congruent number.

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, 159087 + ... + 159094.

2^1272724 is an apocalyptic number.

It is an amenable number.

1272724 is a deficient number, since it is larger than the sum of its proper divisors (954550).

1272724 is a wasteful number, since it uses less digits than its factorization.

1272724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318185 (or 318183 counting only the distinct ones).

The product of its digits is 1568, while the sum is 25.

The square root of 1272724 is about 1128.1506991533. The cubic root of 1272724 is about 108.3705833770.

The spelling of 1272724 in words is "one million, two hundred seventy-two thousand, seven hundred twenty-four".