1302066442 has 4 divisors (see below), whose sum is σ = 1953099666. Its totient is φ = 651033220.

The previous prime is 1302066439. The next prime is 1302066443. The reversal of 1302066442 is 2446602031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2446602031 = 2633 ⋅929207.

It can be written as a sum of positive squares in only one way, i.e., 1107491841 + 194574601 = 33279^2 + 13949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1302066442.

It is not an unprimeable number, because it can be changed into a prime (1302066443) 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, 325516609 + ... + 325516612.

Almost surely, 2^1302066442 is an apocalyptic number.

1302066442 is a deficient number, since it is larger than the sum of its proper divisors (651033224).

1302066442 is an equidigital number, since it uses as much as digits as its factorization.

1302066442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651033223.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1302066442 is about 36084.1577704122. The cubic root of 1302066442 is about 1091.9708589995.

Adding to 1302066442 its reverse (2446602031), we get a palindrome (3748668473).

The spelling of 1302066442 in words is "one billion, three hundred two million, sixty-six thousand, four hundred forty-two".