1261261034 has 16 divisors (see below), whose sum is σ = 2102824800. Its totient is φ = 562482960.

The previous prime is 1261261013. The next prime is 1261261037. The reversal of 1261261034 is 4301621621.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1261260994 and 1261261012.

It is not an unprimeable number, because it can be changed into a prime (1261261037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539684 + ... + 542015.

It is an arithmetic number, because the mean of its divisors is an integer number (131426550).

Almost surely, 2^1261261034 is an apocalyptic number.

1261261034 is a deficient number, since it is larger than the sum of its proper divisors (841563766).

1261261034 is a wasteful number, since it uses less digits than its factorization.

1261261034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081765.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1261261034 is about 35514.2370606494. The cubic root of 1261261034 is about 1080.4425009997.

Adding to 1261261034 its reverse (4301621621), we get a palindrome (5562882655).

The spelling of 1261261034 in words is "one billion, two hundred sixty-one million, two hundred sixty-one thousand, thirty-four".