42134661 has 20 divisors (see below), whose sum is σ = 63121344. Its totient is φ = 28009800.

The previous prime is 42134641. The next prime is 42134671. The reversal of 42134661 is 16643124.

It is not a de Polignac number, because 42134661 - 2⁹ = 42134149 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42134621) 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 19 ways as a sum of consecutive naturals, for example, 45796 + ... + 46706.

Almost surely, 2^42134661 is an apocalyptic number.

It is an amenable number.

42134661 is a deficient number, since it is larger than the sum of its proper divisors (20986683).

42134661 is an equidigital number, since it uses as much as digits as its factorization.

42134661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494 (or 1485 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 42134661 is about 6491.1217058379. The cubic root of 42134661 is about 347.9737643717.

Adding to 42134661 its reverse (16643124), we get a palindrome (58777785).

The spelling of 42134661 in words is "forty-two million, one hundred thirty-four thousand, six hundred sixty-one".