1261296007 has 8 divisors (see below), whose sum is σ = 1275951600. Its totient is φ = 1246696704.

The previous prime is 1261295999. The next prime is 1261296013. The reversal of 1261296007 is 7006921621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1261296007 - 2³ = 1261295999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261296017) 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, 31863 + ... + 59479.

It is an arithmetic number, because the mean of its divisors is an integer number (159493950).

Almost surely, 2^1261296007 is an apocalyptic number.

1261296007 is a deficient number, since it is larger than the sum of its proper divisors (14655593).

1261296007 is a wasteful number, since it uses less digits than its factorization.

1261296007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28145.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1261296007 is about 35514.7294372349. The cubic root of 1261296007 is about 1080.4524872926.

The spelling of 1261296007 in words is "one billion, two hundred sixty-one million, two hundred ninety-six thousand, seven".