42131120434 has 16 divisors (see below), whose sum is σ = 72061374168. Its totient is φ = 18301300992.

The previous prime is 42131120377. The next prime is 42131120443. The reversal of 42131120434 is 43402113124.

It can be written as a sum of positive squares in 4 ways, for example, as 41369526025 + 761594409 = 203395^2 + 27597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42131120399 and 42131120408.

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, 47659197 + ... + 47660080.

Almost surely, 2^42131120434 is an apocalyptic number.

42131120434 is a deficient number, since it is larger than the sum of its proper divisors (29930253734).

42131120434 is a wasteful number, since it uses less digits than its factorization.

42131120434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95319309.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 42131120434 its reverse (43402113124), we get a palindrome (85533233558).

The spelling of 42131120434 in words is "forty-two billion, one hundred thirty-one million, one hundred twenty thousand, four hundred thirty-four".