1321098042 has 32 divisors (see below), whose sum is σ = 2883916224. Its totient is φ = 400121600.

The previous prime is 1321098041. The next prime is 1321098047. The reversal of 1321098042 is 2408901231.

It is not an unprimeable number, because it can be changed into a prime (1321098041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159442 + ... + 167522.

It is an arithmetic number, because the mean of its divisors is an integer number (90122382).

Almost surely, 2^1321098042 is an apocalyptic number.

1321098042 is an abundant number, since it is smaller than the sum of its proper divisors (1562818182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321098042 is a wasteful number, since it uses less digits than its factorization.

1321098042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1321098042 is about 36346.9124135737. The cubic root of 1321098042 is about 1097.2653952732.

Adding to 1321098042 its reverse (2408901231), we get a palindrome (3729999273).

The spelling of 1321098042 in words is "one billion, three hundred twenty-one million, ninety-eight thousand, forty-two".