1261248346 has 16 divisors (see below), whose sum is σ = 1906855200. Its totient is φ = 625640400.

The previous prime is 1261248319. The next prime is 1261248347. The reversal of 1261248346 is 6438421621.

It is not an unprimeable number, because it can be changed into a prime (1261248347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311185 + ... + 315211.

It is an arithmetic number, because the mean of its divisors is an integer number (119178450).

Almost surely, 2^1261248346 is an apocalyptic number.

1261248346 is a deficient number, since it is larger than the sum of its proper divisors (645606854).

1261248346 is a wasteful number, since it uses less digits than its factorization.

1261248346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5229.

The product of its digits is 55296, while the sum is 37.

The square root of 1261248346 is about 35514.0584276143. The cubic root of 1261248346 is about 1080.4388779854.

Adding to 1261248346 its reverse (6438421621), we get a palindrome (7699669967).

The spelling of 1261248346 in words is "one billion, two hundred sixty-one million, two hundred forty-eight thousand, three hundred forty-six".