42749226 has 96 divisors (see below), whose sum is σ = 106928640. Its totient is φ = 12314016.

The previous prime is 42749207. The next prime is 42749251. The reversal of 42749226 is 62294724.

42749226 is a `hidden beast` number, since 427 + 4 + 9 + 226 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 909535 + ... + 909581.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^42749226 is an apocalyptic number.

42749226 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42749226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53464320).

42749226 is an abundant number, since it is smaller than the sum of its proper divisors (64179414).

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

42749226 is a wasteful number, since it uses less digits than its factorization.

42749226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 88 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 42749226 is about 6538.2892257838. The cubic root of 42749226 is about 349.6574226204.

The spelling of 42749226 in words is "forty-two million, seven hundred forty-nine thousand, two hundred twenty-six".