1265949122 has 16 divisors (see below), whose sum is σ = 1972252800. Its totient is φ = 608706000.

The previous prime is 1265949109. The next prime is 1265949127. The reversal of 1265949122 is 2219495621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265949122.

It is not an unprimeable number, because it can be changed into a prime (1265949127) 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, 28922 + ... + 58037.

It is an arithmetic number, because the mean of its divisors is an integer number (123265800).

Almost surely, 2^1265949122 is an apocalyptic number.

1265949122 is a deficient number, since it is larger than the sum of its proper divisors (706303678).

1265949122 is a wasteful number, since it uses less digits than its factorization.

1265949122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87241.

The product of its digits is 77760, while the sum is 41.

The square root of 1265949122 is about 35580.1787797644. The cubic root of 1265949122 is about 1081.7795085781.

The spelling of 1265949122 in words is "one billion, two hundred sixty-five million, nine hundred forty-nine thousand, one hundred twenty-two".