1275345 has 40 divisors (see below), whose sum is σ = 2369664. Its totient is φ = 655776.

The previous prime is 1275341. The next prime is 1275349. The reversal of 1275345 is 5435721.

It is a happy number.

1275345 is a `hidden beast` number, since 127 + 534 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1275341) and next prime (1275349).

It is not a de Polignac number, because 1275345 - 2² = 1275341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1275341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19002 + ... + 19068.

2^1275345 is an apocalyptic number.

1275345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275345 is a deficient number, since it is larger than the sum of its proper divisors (1094319).

1275345 is an equidigital number, since it uses as much as digits as its factorization.

1275345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 122 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 1275345 is about 1129.3117372984. The cubic root of 1275345 is about 108.4449238053. Note that the first 3 decimals are identical.

It can be divided in two parts, 12 and 75345, that added together give a palindrome (75357).

The spelling of 1275345 in words is "one million, two hundred seventy-five thousand, three hundred forty-five".