1271090 has 16 divisors (see below), whose sum is σ = 2422872. Its totient is φ = 478464.

The previous prime is 1271089. The next prime is 1271111. The reversal of 1271090 is 901721.

It can be written as a sum of positive squares in 4 ways, for example, as 1270129 + 961 = 1127^2 + 31^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3569 + ... + 3908.

2^1271090 is an apocalyptic number.

1271090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1271090 is a deficient number, since it is larger than the sum of its proper divisors (1151782).

1271090 is a wasteful number, since it uses less digits than its factorization.

1271090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7501.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1271090 is about 1127.4262725340. The cubic root of 1271090 is about 108.3241859469.

The spelling of 1271090 in words is "one million, two hundred seventy-one thousand, ninety".