120421424442 has 64 divisors (see below), whose sum is σ = 267733278720. Its totient is φ = 35802748800.

The previous prime is 120421424393. The next prime is 120421424443. The reversal of 120421424442 is 244424124021.

It is a super-2 number, since 2×120421424442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120421424443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854809 + ... + 985667.

It is an arithmetic number, because the mean of its divisors is an integer number (4183332480).

Almost surely, 2^120421424442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120421424442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133866639360).

120421424442 is an abundant number, since it is smaller than the sum of its proper divisors (147311854278).

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

120421424442 is a wasteful number, since it uses less digits than its factorization.

120421424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131139.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 120421424442 its reverse (244424124021), we get a palindrome (364845548463).

The spelling of 120421424442 in words is "one hundred twenty billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred forty-two".