1071267145 has 16 divisors (see below), whose sum is σ = 1385128080. Its totient is φ = 790677504.

The previous prime is 1071267137. The next prime is 1071267149. The reversal of 1071267145 is 5417621701.

It can be written as a sum of positive squares in 8 ways, for example, as 42653961 + 1028613184 = 6531^2 + 32072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071267145 - 2³ = 1071267137 is a prime.

It is a super-2 number, since 2×1071267145² = 2295226591912902050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1071267145.

It is not an unprimeable number, because it can be changed into a prime (1071267149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185461 + ... + 191149.

It is an arithmetic number, because the mean of its divisors is an integer number (86570505).

Almost surely, 2^1071267145 is an apocalyptic number.

It is an amenable number.

1071267145 is a deficient number, since it is larger than the sum of its proper divisors (313860935).

1071267145 is a wasteful number, since it uses less digits than its factorization.

1071267145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1071267145 is about 32730.2176130865. The cubic root of 1071267145 is about 1023.2127155975.

Adding to 1071267145 its reverse (5417621701), we get a palindrome (6488888846).

The spelling of 1071267145 in words is "one billion, seventy-one million, two hundred sixty-seven thousand, one hundred forty-five".