42102241 has 4 divisors (see below), whose sum is σ = 42142912. Its totient is φ = 42061572.

The previous prime is 42102199. The next prime is 42102257. The reversal of 42102241 is 14220124.

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 42102241 - 2¹¹ = 42100193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42106241) 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, 18741 + ... + 20866.

It is an arithmetic number, because the mean of its divisors is an integer number (10535728).

Almost surely, 2^42102241 is an apocalyptic number.

It is an amenable number.

42102241 is a deficient number, since it is larger than the sum of its proper divisors (40671).

42102241 is a wasteful number, since it uses less digits than its factorization.

42102241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40670.

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

The square root of 42102241 is about 6488.6239681461. The cubic root of 42102241 is about 347.8844934181.

Adding to 42102241 its reverse (14220124), we get a palindrome (56322365).

The spelling of 42102241 in words is "forty-two million, one hundred two thousand, two hundred forty-one".