42261541 has 8 divisors (see below), whose sum is σ = 51140160. Its totient is φ = 34093248.

The previous prime is 42261539. The next prime is 42261551. The reversal of 42261541 is 14516224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42261541 - 2¹ = 42261539 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 (42261551) 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 7 ways as a sum of consecutive naturals, for example, 177451 + ... + 177688.

It is an arithmetic number, because the mean of its divisors is an integer number (6392520).

Almost surely, 2^42261541 is an apocalyptic number.

It is an amenable number.

42261541 is a deficient number, since it is larger than the sum of its proper divisors (8878619).

42261541 is a wasteful number, since it uses less digits than its factorization.

42261541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355163.

The product of its digits is 1920, while the sum is 25.

The square root of 42261541 is about 6500.8877086133. The cubic root of 42261541 is about 348.3226985350.

Adding to 42261541 its reverse (14516224), we get a palindrome (56777765).

The spelling of 42261541 in words is "forty-two million, two hundred sixty-one thousand, five hundred forty-one".