1265240376 has 96 divisors (see below), whose sum is σ = 3539764800. Its totient is φ = 408038400.

The previous prime is 1265240369. The next prime is 1265240387. The reversal of 1265240376 is 6730425621.

1265240376 is a `hidden beast` number, since 1 + 265 + 24 + 0 + 376 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1265240376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299076 + ... + 303276.

It is an arithmetic number, because the mean of its divisors is an integer number (36872550).

Almost surely, 2^1265240376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265240376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769882400).

1265240376 is an abundant number, since it is smaller than the sum of its proper divisors (2274524424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265240376 is a wasteful number, since it uses less digits than its factorization.

1265240376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1265240376 is about 35570.2175422080. The cubic root of 1265240376 is about 1081.5775915574.

Adding to 1265240376 its reverse (6730425621), we get a palindrome (7995665997).

The spelling of 1265240376 in words is "one billion, two hundred sixty-five million, two hundred forty thousand, three hundred seventy-six".