42242101 has 4 divisors (see below), whose sum is σ = 46082304. Its totient is φ = 38401900.

The previous prime is 42242087. The next prime is 42242141. The reversal of 42242101 is 10124224.

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 42242101 - 2⁵ = 42242069 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 (42242141) 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, 1920085 + ... + 1920106.

It is an arithmetic number, because the mean of its divisors is an integer number (11520576).

Almost surely, 2^42242101 is an apocalyptic number.

It is an amenable number.

42242101 is a deficient number, since it is larger than the sum of its proper divisors (3840203).

42242101 is a wasteful number, since it uses less digits than its factorization.

42242101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840202.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42242101 is about 6499.3923562130. The cubic root of 42242101 is about 348.2692817118.

Adding to 42242101 its reverse (10124224), we get a palindrome (52366325).

The spelling of 42242101 in words is "forty-two million, two hundred forty-two thousand, one hundred one".