1266452145 has 128 divisors (see below), whose sum is σ = 2813460480. Its totient is φ = 527109120.

The previous prime is 1266452141. The next prime is 1266452147. The reversal of 1266452145 is 5412546621.

1266452145 is a `hidden beast` number, since 1 + 2 + 6 + 645 + 2 + 1 + 4 + 5 = 666.

1266452145 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1266452145 - 2² = 1266452141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266452141) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 496744 + ... + 499286.

It is an arithmetic number, because the mean of its divisors is an integer number (21980160).

Almost surely, 2^1266452145 is an apocalyptic number.

1266452145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266452145 is an abundant number, since it is smaller than the sum of its proper divisors (1547008335).

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

1266452145 is a wasteful number, since it uses less digits than its factorization.

1266452145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612 (or 2606 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1266452145 is about 35587.2469432520. The cubic root of 1266452145 is about 1081.9227707641.

Adding to 1266452145 its reverse (5412546621), we get a palindrome (6678998766).

The spelling of 1266452145 in words is "one billion, two hundred sixty-six million, four hundred fifty-two thousand, one hundred forty-five".