1321362042 has 256 divisors, whose sum is σ = 3765436416. Its totient is φ = 298080000.

The previous prime is 1321362041. The next prime is 1321362067. The reversal of 1321362042 is 2402631231.

It is not an unprimeable number, because it can be changed into a prime (1321362041) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8750667 + ... + 8750817.

It is an arithmetic number, because the mean of its divisors is an integer number (14708736).

Almost surely, 2^1321362042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321362042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882718208).

1321362042 is an abundant number, since it is smaller than the sum of its proper divisors (2444074374).

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

1321362042 is a wasteful number, since it uses less digits than its factorization.

1321362042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1321362042 is about 36350.5439023957. The cubic root of 1321362042 is about 1097.3384806313.

Adding to 1321362042 its reverse (2402631231), we get a palindrome (3723993273).

It can be divided in two parts, 1321 and 362042, that added together give a palindrome (363363).

The spelling of 1321362042 in words is "one billion, three hundred twenty-one million, three hundred sixty-two thousand, forty-two".