1275742 has 16 divisors (see below), whose sum is σ = 2081520. Its totient is φ = 582912.

The previous prime is 1275737. The next prime is 1275749. The reversal of 1275742 is 2475721.

It is a self number, because there is not a number n which added to its sum of digits gives 1275742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3438 + ... + 3790.

It is an arithmetic number, because the mean of its divisors is an integer number (130095).

2^1275742 is an apocalyptic number.

1275742 is a deficient number, since it is larger than the sum of its proper divisors (805778).

1275742 is a wasteful number, since it uses less digits than its factorization.

1275742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 3920, while the sum is 28.

The square root of 1275742 is about 1129.4874943973. The cubic root of 1275742 is about 108.4561751838.

The spelling of 1275742 in words is "one million, two hundred seventy-five thousand, seven hundred forty-two".