42123220130 has 16 divisors (see below), whose sum is σ = 75848020920. Its totient is φ = 16843460352.

The previous prime is 42123220129. The next prime is 42123220141. The reversal of 42123220130 is 3102232124.

It can be written as a sum of positive squares in 4 ways, for example, as 18814785889 + 23308434241 = 137167^2 + 152671^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698045 + ... + 755984.

Almost surely, 2^42123220130 is an apocalyptic number.

42123220130 is a deficient number, since it is larger than the sum of its proper divisors (33724800790).

42123220130 is a wasteful number, since it uses less digits than its factorization.

42123220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456933.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42123220130 its reverse (3102232124), we get a palindrome (45225452254).

The spelling of 42123220130 in words is "forty-two billion, one hundred twenty-three million, two hundred twenty thousand, one hundred thirty".