1321002442 has 16 divisors (see below), whose sum is σ = 2165743872. Its totient is φ = 601594560.

The previous prime is 1321002427. The next prime is 1321002443. The reversal of 1321002442 is 2442001231.

It is not an unprimeable number, because it can be changed into a prime (1321002443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625608 + ... + 627715.

It is an arithmetic number, because the mean of its divisors is an integer number (135358992).

Almost surely, 2^1321002442 is an apocalyptic number.

1321002442 is a deficient number, since it is larger than the sum of its proper divisors (844741430).

1321002442 is a wasteful number, since it uses less digits than its factorization.

1321002442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253373.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1321002442 is about 36345.5972849532. The cubic root of 1321002442 is about 1097.2389271134.

Adding to 1321002442 its reverse (2442001231), we get a palindrome (3763003673).

The spelling of 1321002442 in words is "one billion, three hundred twenty-one million, two thousand, four hundred forty-two".