1261712 has 10 divisors (see below), whose sum is σ = 2444598. Its totient is φ = 630848.

The previous prime is 1261699. The next prime is 1261717. The reversal of 1261712 is 2171621.

It can be written as a sum of positive squares in only one way, i.e., 952576 + 309136 = 976^2 + 556^2 .

It is not an unprimeable number, because it can be changed into a prime (1261717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39413 + ... + 39444.

2^1261712 is an apocalyptic number.

It is an amenable number.

1261712 is a deficient number, since it is larger than the sum of its proper divisors (1182886).

1261712 is an equidigital number, since it uses as much as digits as its factorization.

1261712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78865 (or 78859 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 1261712 is about 1123.2595425813. The cubic root of 1261712 is about 108.0571256999.

Subtracting 1261712 from its reverse (2171621), we obtain a palindrome (909909).

The spelling of 1261712 in words is "one million, two hundred sixty-one thousand, seven hundred twelve".