42538241 has 4 divisors (see below), whose sum is σ = 42558000. Its totient is φ = 42518484.

The previous prime is 42538229. The next prime is 42538259. The reversal of 42538241 is 14283524.

It is a happy number.

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 42538241 - 2¹⁸ = 42276097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42538291) 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, 6191 + ... + 11108.

It is an arithmetic number, because the mean of its divisors is an integer number (10639500).

Almost surely, 2^42538241 is an apocalyptic number.

It is an amenable number.

42538241 is a deficient number, since it is larger than the sum of its proper divisors (19759).

42538241 is a wasteful number, since it uses less digits than its factorization.

42538241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19758.

The product of its digits is 7680, while the sum is 29.

The square root of 42538241 is about 6522.1346965545. The cubic root of 42538241 is about 349.0812393151.

The spelling of 42538241 in words is "forty-two million, five hundred thirty-eight thousand, two hundred forty-one".