1264542434 has 4 divisors (see below), whose sum is σ = 1896813654. Its totient is φ = 632271216.

The previous prime is 1264542413. The next prime is 1264542439. The reversal of 1264542434 is 4342454621.

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

It can be written as a sum of positive squares in only one way, i.e., 1217661025 + 46881409 = 34895^2 + 6847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1264542394 and 1264542403.

It is not an unprimeable number, because it can be changed into a prime (1264542439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316135607 + ... + 316135610.

Almost surely, 2^1264542434 is an apocalyptic number.

1264542434 is a deficient number, since it is larger than the sum of its proper divisors (632271220).

1264542434 is an equidigital number, since it uses as much as digits as its factorization.

1264542434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632271219.

The product of its digits is 92160, while the sum is 35.

The square root of 1264542434 is about 35560.4054251354. The cubic root of 1264542434 is about 1081.3786788215.

The spelling of 1264542434 in words is "one billion, two hundred sixty-four million, five hundred forty-two thousand, four hundred thirty-four".