42210541 has 4 divisors (see below), whose sum is σ = 44693532. Its totient is φ = 39727552.

The previous prime is 42210529. The next prime is 42210551. The reversal of 42210541 is 14501224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 19448100 = 4771^2 + 4410^2 .

It is a cyclic number.

It is not a de Polignac number, because 42210541 - 2¹¹ = 42208493 is a prime.

It is a super-3 number, since 3×42210541³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42210521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241470 + ... + 1241503.

It is an arithmetic number, because the mean of its divisors is an integer number (11173383).

Almost surely, 2^42210541 is an apocalyptic number.

It is an amenable number.

42210541 is a deficient number, since it is larger than the sum of its proper divisors (2482991).

42210541 is a wasteful number, since it uses less digits than its factorization.

42210541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482990.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42210541 is about 6496.9639832771. The cubic root of 42210541 is about 348.1825268968.

Adding to 42210541 its reverse (14501224), we get a palindrome (56711765).

The spelling of 42210541 in words is "forty-two million, two hundred ten thousand, five hundred forty-one".