1264144135 has 4 divisors (see below), whose sum is σ = 1516972968. Its totient is φ = 1011315304.

The previous prime is 1264144121. The next prime is 1264144151. The reversal of 1264144135 is 5314414621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1264144135 - 2¹⁵ = 1264111367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264144097 and 1264144106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126414409 + ... + 126414418.

It is an arithmetic number, because the mean of its divisors is an integer number (379243242).

Almost surely, 2^1264144135 is an apocalyptic number.

1264144135 is a deficient number, since it is larger than the sum of its proper divisors (252828833).

1264144135 is an equidigital number, since it uses as much as digits as its factorization.

1264144135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252828832.

The product of its digits is 11520, while the sum is 31.

The square root of 1264144135 is about 35554.8046682864. The cubic root of 1264144135 is about 1081.2651312215.

Adding to 1264144135 its reverse (5314414621), we get a palindrome (6578558756).

The spelling of 1264144135 in words is "one billion, two hundred sixty-four million, one hundred forty-four thousand, one hundred thirty-five".