1071261 has 12 divisors (see below), whose sum is σ = 1589692. Its totient is φ = 694656.

The previous prime is 1071253. The next prime is 1071269. The reversal of 1071261 is 1621701.

It is an interprime number because it is at equal distance from previous prime (1071253) and next prime (1071269).

It can be written as a sum of positive squares in 2 ways, for example, as 962361 + 108900 = 981^2 + 330^2 .

It is not a de Polignac number, because 1071261 - 2³ = 1071253 is a prime.

It is a super-2 number, since 2×1071261² = 2295200260242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276 + ... + 1941.

2^1071261 is an apocalyptic number.

It is an amenable number.

1071261 is a deficient number, since it is larger than the sum of its proper divisors (518431).

1071261 is a wasteful number, since it uses less digits than its factorization.

1071261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260 (or 3257 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1071261 is about 1035.0173911582. The cubic root of 1071261 is about 102.3210759144.

Adding to 1071261 its reverse (1621701), we get a palindrome (2692962).

The spelling of 1071261 in words is "one million, seventy-one thousand, two hundred sixty-one".