42429129 has 4 divisors (see below), whose sum is σ = 56572176. Its totient is φ = 28286084.

The previous prime is 42429119. The next prime is 42429131. The reversal of 42429129 is 92192424.

42429129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42429129 - 2⁴ = 42429113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42429129.

It is not an unprimeable number, because it can be changed into a prime (42429119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7071519 + ... + 7071524.

It is an arithmetic number, because the mean of its divisors is an integer number (14143044).

Almost surely, 2^42429129 is an apocalyptic number.

It is an amenable number.

42429129 is a deficient number, since it is larger than the sum of its proper divisors (14143047).

42429129 is a wasteful number, since it uses less digits than its factorization.

42429129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143046.

The product of its digits is 10368, while the sum is 33.

The square root of 42429129 is about 6513.7645797189. The cubic root of 42429129 is about 348.7825154355.

The spelling of 42429129 in words is "forty-two million, four hundred twenty-nine thousand, one hundred twenty-nine".