42188801 has 4 divisors (see below), whose sum is σ = 42447792. Its totient is φ = 41929812.

The previous prime is 42188789. The next prime is 42188807. The reversal of 42188801 is 10888124.

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 42188801 - 2¹⁰ = 42187777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42188807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129251 + ... + 129576.

It is an arithmetic number, because the mean of its divisors is an integer number (10611948).

It is a Proth number, since it is equal to 2575 ⋅ 2¹⁴ + 1 and 2575 < 2¹⁴.

Almost surely, 2^42188801 is an apocalyptic number.

It is an amenable number.

42188801 is a deficient number, since it is larger than the sum of its proper divisors (258991).

42188801 is a wasteful number, since it uses less digits than its factorization.

42188801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258990.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 42188801 is about 6495.2906786379. The cubic root of 42188801 is about 348.1227409773.

The spelling of 42188801 in words is "forty-two million, one hundred eighty-eight thousand, eight hundred one".