1264426261 has 8 divisors (see below), whose sum is σ = 1445906304. Its totient is φ = 1083158160.

The previous prime is 1264426259. The next prime is 1264426283. The reversal of 1264426261 is 1626244621.

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

It is not a de Polignac number, because 1264426261 - 2¹ = 1264426259 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 (1264421261) 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, 39985 + ... + 64246.

It is an arithmetic number, because the mean of its divisors is an integer number (180738288).

Almost surely, 2^1264426261 is an apocalyptic number.

It is an amenable number.

1264426261 is a deficient number, since it is larger than the sum of its proper divisors (181480043).

1264426261 is a wasteful number, since it uses less digits than its factorization.

1264426261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105971.

The product of its digits is 27648, while the sum is 34.

The square root of 1264426261 is about 35558.7719276130. The cubic root of 1264426261 is about 1081.3455625340.

The spelling of 1264426261 in words is "one billion, two hundred sixty-four million, four hundred twenty-six thousand, two hundred sixty-one".