1272742 has 8 divisors (see below), whose sum is σ = 1945296. Its totient is φ = 624312.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272742 is 2472721.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272749) 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, 5898 + ... + 6109.

It is an arithmetic number, because the mean of its divisors is an integer number (243162).

2^1272742 is an apocalyptic number.

1272742 is a deficient number, since it is larger than the sum of its proper divisors (672554).

1272742 is a wasteful number, since it uses less digits than its factorization.

1272742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12062.

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

The square root of 1272742 is about 1128.1586767827. The cubic root of 1272742 is about 108.3710942658.

It can be divided in two parts, 12727 and 42, that added together give a square (12769 = 113²).

The spelling of 1272742 in words is "one million, two hundred seventy-two thousand, seven hundred forty-two".