42189101 has 4 divisors (see below), whose sum is σ = 44409600. Its totient is φ = 39968604.

The previous prime is 42189089. The next prime is 42189151. The reversal of 42189101 is 10198124.

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 42189101 - 2¹⁴ = 42172717 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 (42189151) 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, 1110221 + ... + 1110258.

It is an arithmetic number, because the mean of its divisors is an integer number (11102400).

Almost surely, 2^42189101 is an apocalyptic number.

It is an amenable number.

42189101 is a deficient number, since it is larger than the sum of its proper divisors (2220499).

42189101 is a wasteful number, since it uses less digits than its factorization.

42189101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220498.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 42189101 is about 6495.3137722515. The cubic root of 42189101 is about 348.1235661297.

The spelling of 42189101 in words is "forty-two million, one hundred eighty-nine thousand, one hundred one".