1261435262 has 8 divisors (see below), whose sum is σ = 1901957376. Its totient is φ = 627449472.

The previous prime is 1261435261. The next prime is 1261435267. The reversal of 1261435262 is 2625341621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261435261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633598 + ... + 1634369.

It is an arithmetic number, because the mean of its divisors is an integer number (237744672).

Almost surely, 2^1261435262 is an apocalyptic number.

1261435262 is a deficient number, since it is larger than the sum of its proper divisors (640522114).

1261435262 is a wasteful number, since it uses less digits than its factorization.

1261435262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268162.

The product of its digits is 17280, while the sum is 32.

The square root of 1261435262 is about 35516.6899077040. The cubic root of 1261435262 is about 1080.4922487426.

Adding to 1261435262 its reverse (2625341621), we get a palindrome (3886776883).

The spelling of 1261435262 in words is "one billion, two hundred sixty-one million, four hundred thirty-five thousand, two hundred sixty-two".