1264442045 has 8 divisors (see below), whose sum is σ = 1532973624. Its totient is φ = 1001124864.

The previous prime is 1264442029. The next prime is 1264442051. The reversal of 1264442045 is 5402444621.

It can be written as a sum of positive squares in 4 ways, for example, as 1776889 + 1262665156 = 1333^2 + 35534^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1264442045 - 2⁴ = 1264442029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1303064 + ... + 1304033.

It is an arithmetic number, because the mean of its divisors is an integer number (191621703).

Almost surely, 2^1264442045 is an apocalyptic number.

It is an amenable number.

1264442045 is a deficient number, since it is larger than the sum of its proper divisors (268531579).

1264442045 is an equidigital number, since it uses as much as digits as its factorization.

1264442045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607199.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 1264442045 is about 35558.9938693434. The cubic root of 1264442045 is about 1081.3500620418.

Adding to 1264442045 its reverse (5402444621), we get a palindrome (6666886666).

The spelling of 1264442045 in words is "one billion, two hundred sixty-four million, four hundred forty-two thousand, forty-five".