42251142242 has 16 divisors (see below), whose sum is σ = 64156027320. Its totient is φ = 20866656768.

The previous prime is 42251142203. The next prime is 42251142257. The reversal of 42251142242 is 24224115224.

It can be written as a sum of positive squares in 4 ways, for example, as 41787127561 + 464014681 = 204419^2 + 21541^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115193 + ... + 312684.

Almost surely, 2^42251142242 is an apocalyptic number.

42251142242 is a deficient number, since it is larger than the sum of its proper divisors (21904885078).

42251142242 is a wasteful number, since it uses less digits than its factorization.

42251142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428485.

The product of its digits is 10240, while the sum is 29.

Adding to 42251142242 its reverse (24224115224), we get a palindrome (66475257466).

The spelling of 42251142242 in words is "forty-two billion, two hundred fifty-one million, one hundred forty-two thousand, two hundred forty-two".