42421634 has 8 divisors (see below), whose sum is σ = 65184588. Its totient is φ = 20693440.

The previous prime is 42421633. The next prime is 42421667. The reversal of 42421634 is 43612424.

It can be written as a sum of positive squares in 2 ways, for example, as 31956409 + 10465225 = 5653^2 + 3235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42421633) 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, 258587 + ... + 258750.

Almost surely, 2^42421634 is an apocalyptic number.

42421634 is a deficient number, since it is larger than the sum of its proper divisors (22762954).

42421634 is a wasteful number, since it uses less digits than its factorization.

42421634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517380.

The product of its digits is 4608, while the sum is 26.

The square root of 42421634 is about 6513.1892341617. The cubic root of 42421634 is about 348.7619770384.

The spelling of 42421634 in words is "forty-two million, four hundred twenty-one thousand, six hundred thirty-four".