1261215 has 12 divisors (see below), whose sum is σ = 2186184. Its totient is φ = 672624.

The previous prime is 1261199. The next prime is 1261217. The reversal of 1261215 is 5121621.

It is not a de Polignac number, because 1261215 - 2⁴ = 1261199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261217) 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, 13969 + ... + 14058.

It is an arithmetic number, because the mean of its divisors is an integer number (182182).

2^1261215 is an apocalyptic number.

1261215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1261215 is a deficient number, since it is larger than the sum of its proper divisors (924969).

1261215 is a wasteful number, since it uses less digits than its factorization.

1261215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28038 (or 28035 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1261215 is about 1123.0382896411. The cubic root of 1261215 is about 108.0429356035.

Adding to 1261215 its reverse (5121621), we get a palindrome (6382836).

The spelling of 1261215 in words is "one million, two hundred sixty-one thousand, two hundred fifteen".