42242634 has 56 divisors (see below), whose sum is σ = 108600480. Its totient is φ = 12066408.

The previous prime is 42242633. The next prime is 42242639. The reversal of 42242634 is 43624224.

42242634 is a `hidden beast` number, since 4 + 2 + 24 + 2 + 634 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 42242598 and 42242607.

It is not an unprimeable number, because it can be changed into a prime (42242633) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 8137 + ... + 12275.

Almost surely, 2^42242634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42242634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54300240).

42242634 is an abundant number, since it is smaller than the sum of its proper divisors (66357846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42242634 is an equidigital number, since it uses as much as digits as its factorization.

42242634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166 (or 4151 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 42242634 is about 6499.4333599168. The cubic root of 42242634 is about 348.2707464965.

Adding to 42242634 its reverse (43624224), we get a palindrome (85866858).

The spelling of 42242634 in words is "forty-two million, two hundred forty-two thousand, six hundred thirty-four".