42611481 has 24 divisors (see below), whose sum is σ = 69394080. Its totient is φ = 25823160.

The previous prime is 42611473. The next prime is 42611533. The reversal of 42611481 is 18411624.

It is a happy number.

42611481 is a `hidden beast` number, since 4 + 2 + 611 + 48 + 1 = 666.

It is not a de Polignac number, because 42611481 - 2³ = 42611473 is a prime.

It is a super-2 number, since 2×42611481² = 3631476626026722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42611381) 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 23 ways as a sum of consecutive naturals, for example, 3255 + ... + 9788.

It is an arithmetic number, because the mean of its divisors is an integer number (2891420).

Almost surely, 2^42611481 is an apocalyptic number.

It is an amenable number.

42611481 is a deficient number, since it is larger than the sum of its proper divisors (26782599).

42611481 is a wasteful number, since it uses less digits than its factorization.

42611481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13074 (or 13057 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 42611481 is about 6527.7470079653. The cubic root of 42611481 is about 349.2814673943.

The spelling of 42611481 in words is "forty-two million, six hundred eleven thousand, four hundred eighty-one".