42258129 has 4 divisors (see below), whose sum is σ = 56344176. Its totient is φ = 28172084.

The previous prime is 42258103. The next prime is 42258131. The reversal of 42258129 is 92185224.

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 42258129 - 2¹³ = 42249937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42258129.

It is not an unprimeable number, because it can be changed into a prime (42258529) 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, 7043019 + ... + 7043024.

It is an arithmetic number, because the mean of its divisors is an integer number (14086044).

Almost surely, 2^42258129 is an apocalyptic number.

It is an amenable number.

42258129 is a deficient number, since it is larger than the sum of its proper divisors (14086047).

42258129 is a wasteful number, since it uses less digits than its factorization.

42258129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14086046.

The product of its digits is 11520, while the sum is 33.

The square root of 42258129 is about 6500.6252776175. The cubic root of 42258129 is about 348.3133242985.

The spelling of 42258129 in words is "forty-two million, two hundred fifty-eight thousand, one hundred twenty-nine".