42875129 has 4 divisors (see below), whose sum is σ = 46772880. Its totient is φ = 38977380.

The previous prime is 42875101. The next prime is 42875141. The reversal of 42875129 is 92157824.

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 42875129 - 2¹⁶ = 42809593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42875092 and 42875101.

It is not an unprimeable number, because it can be changed into a prime (42875149) 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, 1948859 + ... + 1948880.

It is an arithmetic number, because the mean of its divisors is an integer number (11693220).

Almost surely, 2^42875129 is an apocalyptic number.

It is an amenable number.

42875129 is a deficient number, since it is larger than the sum of its proper divisors (3897751).

42875129 is a wasteful number, since it uses less digits than its factorization.

42875129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897750.

The product of its digits is 40320, while the sum is 38.

The square root of 42875129 is about 6547.9102773328. The cubic root of 42875129 is about 350.0003510201. Note that the first 3 decimals are identical.

It can be divided in two parts, 428 and 75129, that added together give a palindrome (75557).

The spelling of 42875129 in words is "forty-two million, eight hundred seventy-five thousand, one hundred twenty-nine".