42148189 has 4 divisors (see below), whose sum is σ = 43507840. Its totient is φ = 40788540.

The previous prime is 42148157. The next prime is 42148193. The reversal of 42148189 is 98184124.

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 42148189 - 2⁵ = 42148157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42148109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679779 + ... + 679840.

It is an arithmetic number, because the mean of its divisors is an integer number (10876960).

Almost surely, 2^42148189 is an apocalyptic number.

It is an amenable number.

42148189 is a deficient number, since it is larger than the sum of its proper divisors (1359651).

42148189 is a wasteful number, since it uses less digits than its factorization.

42148189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359650.

The product of its digits is 18432, while the sum is 37.

The square root of 42148189 is about 6492.1636609069. The cubic root of 42148189 is about 348.0110012156.

It can be divided in two parts, 4214 and 8189, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 42148189 in words is "forty-two million, one hundred forty-eight thousand, one hundred eighty-nine".