42003134429 has 4 divisors (see below), whose sum is σ = 42186554460. Its totient is φ = 41819714400.

The previous prime is 42003134401. The next prime is 42003134443. The reversal of 42003134429 is 92443130024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37936521529 + 4066612900 = 194773^2 + 63770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42003134429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42003134395 and 42003134404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003134729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91709672 + ... + 91710129.

It is an arithmetic number, because the mean of its divisors is an integer number (10546638615).

Almost surely, 2^42003134429 is an apocalyptic number.

It is an amenable number.

42003134429 is a deficient number, since it is larger than the sum of its proper divisors (183420031).

42003134429 is a wasteful number, since it uses less digits than its factorization.

42003134429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183420030.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 42003134429 in words is "forty-two billion, three million, one hundred thirty-four thousand, four hundred twenty-nine".