42120124242 has 32 divisors (see below), whose sum is σ = 96341059584. Its totient is φ = 12026010000.

The previous prime is 42120124237. The next prime is 42120124243. The reversal of 42120124242 is 24242102124.

It is a happy number.

42120124242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42120124243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284634 + ... + 406517.

It is an arithmetic number, because the mean of its divisors is an integer number (3010658112).

Almost surely, 2^42120124242 is an apocalyptic number.

42120124242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42120124242 is an abundant number, since it is smaller than the sum of its proper divisors (54220935342).

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

42120124242 is a wasteful number, since it uses less digits than its factorization.

42120124242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692614.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 42120124242 its reverse (24242102124), we get a palindrome (66362226366).

The spelling of 42120124242 in words is "forty-two billion, one hundred twenty million, one hundred twenty-four thousand, two hundred forty-two".