1233521120442 has 64 divisors (see below), whose sum is σ = 2690965831680. Its totient is φ = 374668092864.

The previous prime is 1233521120431. The next prime is 1233521120459. The reversal of 1233521120442 is 2440211253321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37836873 + ... + 37869459.

It is an arithmetic number, because the mean of its divisors is an integer number (42046341120).

Almost surely, 2^{1233521120442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1233521120442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345482915840).

1233521120442 is an abundant number, since it is smaller than the sum of its proper divisors (1457444711238).

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

1233521120442 is a wasteful number, since it uses less digits than its factorization.

1233521120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38827.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1233521120442 its reverse (2440211253321), we get a palindrome (3673732373763).

The spelling of 1233521120442 in words is "one trillion, two hundred thirty-three billion, five hundred twenty-one million, one hundred twenty thousand, four hundred forty-two".