42611121 has 48 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 23143680.

The previous prime is 42611089. The next prime is 42611131. The reversal of 42611121 is 12111624.

42611121 is a `hidden beast` number, since 42 + 611 + 12 + 1 = 666.

It is not a de Polignac number, because 42611121 - 2⁵ = 42611089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42611094 and 42611103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42611131) 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 47 ways as a sum of consecutive naturals, for example, 151501 + ... + 151781.

It is an arithmetic number, because the mean of its divisors is an integer number (1539720).

Almost surely, 2^42611121 is an apocalyptic number.

It is an amenable number.

42611121 is a deficient number, since it is larger than the sum of its proper divisors (31295439).

42611121 is a wasteful number, since it uses less digits than its factorization.

42611121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 403 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 42611121 is about 6527.7194333090. The cubic root of 42611121 is about 349.2804837652.

Adding to 42611121 its reverse (12111624), we get a palindrome (54722745).

The spelling of 42611121 in words is "forty-two million, six hundred eleven thousand, one hundred twenty-one".