1261258262 has 32 divisors (see below), whose sum is σ = 2091031200. Its totient is φ = 570519840.

The previous prime is 1261258261. The next prime is 1261258267. The reversal of 1261258262 is 2628521621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261258261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608564 + ... + 610632.

It is an arithmetic number, because the mean of its divisors is an integer number (65344725).

Almost surely, 2^1261258262 is an apocalyptic number.

1261258262 is a deficient number, since it is larger than the sum of its proper divisors (829772938).

1261258262 is a wasteful number, since it uses less digits than its factorization.

1261258262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2311 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 1261258262 is about 35514.1980340258. The cubic root of 1261258262 is about 1080.4417094668.

Adding to 1261258262 its reverse (2628521621), we get a palindrome (3889779883).

The spelling of 1261258262 in words is "one billion, two hundred sixty-one million, two hundred fifty-eight thousand, two hundred sixty-two".