1264350442 has 4 divisors (see below), whose sum is σ = 1896525666. Its totient is φ = 632175220.

The previous prime is 1264350427. The next prime is 1264350467. The reversal of 1264350442 is 2440534621.

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., 695957161 + 568393281 = 26381^2 + 23841^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 316087609 + ... + 316087612.

Almost surely, 2^1264350442 is an apocalyptic number.

1264350442 is a deficient number, since it is larger than the sum of its proper divisors (632175224).

1264350442 is an equidigital number, since it uses as much as digits as its factorization.

1264350442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632175223.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1264350442 is about 35557.7058033839. The cubic root of 1264350442 is about 1081.3239484680.

The spelling of 1264350442 in words is "one billion, two hundred sixty-four million, three hundred fifty thousand, four hundred forty-two".