1321023042 has 24 divisors (see below), whose sum is σ = 2866572540. Its totient is φ = 439670880.

The previous prime is 1321023037. The next prime is 1321023061. The reversal of 1321023042 is 2403201231.

1321023042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1307473281 + 13549761 = 36159^2 + 3681^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43617 + ... + 67412.

Almost surely, 2^1321023042 is an apocalyptic number.

1321023042 is an abundant number, since it is smaller than the sum of its proper divisors (1545549498).

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

1321023042 is a wasteful number, since it uses less digits than its factorization.

1321023042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111698 (or 111695 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1321023042 is about 36345.8806744313. The cubic root of 1321023042 is about 1097.2446306114.

Adding to 1321023042 its reverse (2403201231), we get a palindrome (3724224273).

The spelling of 1321023042 in words is "one billion, three hundred twenty-one million, twenty-three thousand, forty-two".