1266400045 has 8 divisors (see below), whose sum is σ = 1522588896. Its totient is φ = 1011180816.

The previous prime is 1266400039. The next prime is 1266400049. The reversal of 1266400045 is 5400046621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266400045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1266399986 and 1266400022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266400049) 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, 239527 + ... + 244756.

It is an arithmetic number, because the mean of its divisors is an integer number (190323612).

Almost surely, 2^1266400045 is an apocalyptic number.

It is an amenable number.

1266400045 is a deficient number, since it is larger than the sum of its proper divisors (256188851).

1266400045 is an equidigital number, since it uses as much as digits as its factorization.

1266400045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484811.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1266400045 is about 35586.5149319233. The cubic root of 1266400045 is about 1081.9079343174.

Adding to 1266400045 its reverse (5400046621), we get a palindrome (6666446666).

The spelling of 1266400045 in words is "one billion, two hundred sixty-six million, four hundred thousand, forty-five".