1275290 has 8 divisors (see below), whose sum is σ = 2295540. Its totient is φ = 510112.

The previous prime is 1275283. The next prime is 1275293. The reversal of 1275290 is 925721.

It can be written as a sum of positive squares in 2 ways, for example, as 1261129 + 14161 = 1123^2 + 119^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1275293) 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, 63755 + ... + 63774.

2^1275290 is an apocalyptic number.

1275290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275290 is a deficient number, since it is larger than the sum of its proper divisors (1020250).

1275290 is a wasteful number, since it uses less digits than its factorization.

1275290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127536.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1275290 is about 1129.2873859209. The cubic root of 1275290 is about 108.4433648659.

The spelling of 1275290 in words is "one million, two hundred seventy-five thousand, two hundred ninety".