42418541 has 4 divisors (see below), whose sum is σ = 46274784. Its totient is φ = 38562300.

The previous prime is 42418531. The next prime is 42418547. The reversal of 42418541 is 14581424.

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 a de Polignac number, because none of the positive numbers 2^k-42418541 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 (42418547) 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, 1928105 + ... + 1928126.

It is an arithmetic number, because the mean of its divisors is an integer number (11568696).

Almost surely, 2^42418541 is an apocalyptic number.

It is an amenable number.

42418541 is a deficient number, since it is larger than the sum of its proper divisors (3856243).

42418541 is a wasteful number, since it uses less digits than its factorization.

42418541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856242.

The product of its digits is 5120, while the sum is 29.

The square root of 42418541 is about 6512.9517885518. The cubic root of 42418541 is about 348.7535006479.

Adding to 42418541 its reverse (14581424), we get a palindrome (56999965).

The spelling of 42418541 in words is "forty-two million, four hundred eighteen thousand, five hundred forty-one".