42429 has 4 divisors (see below), whose sum is σ = 56576. Its totient is φ = 28284.

The previous prime is 42409. The next prime is 42433. The reversal of 42429 is 92424.

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 not a de Polignac number, because 42429 - 2⁵ = 42397 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7069 + ... + 7074.

It is an arithmetic number, because the mean of its divisors is an integer number (14144).

2⁴²⁴²⁹ is an apocalyptic number.

It is an amenable number.

42429 is a deficient number, since it is larger than the sum of its proper divisors (14147).

42429 is a wasteful number, since it uses less digits than its factorization.

42429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14146.

The product of its digits is 576, while the sum is 21.

The square root of 42429 is about 205.9830090080. The cubic root of 42429 is about 34.8782161960.

The spelling of 42429 in words is "forty-two thousand, four hundred twenty-nine".