42226730 has 64 divisors (see below), whose sum is σ = 95558400. Its totient is φ = 13349952.

The previous prime is 42226729. The next prime is 42226733. The reversal of 42226730 is 3762224.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 42226730.

It is not an unprimeable number, because it can be changed into a prime (42226733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44117 + ... + 45063.

It is an arithmetic number, because the mean of its divisors is an integer number (1493100).

Almost surely, 2^42226730 is an apocalyptic number.

42226730 is an abundant number, since it is smaller than the sum of its proper divisors (53331670).

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

42226730 is a wasteful number, since it uses less digits than its factorization.

42226730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 42226730 is about 6498.2097534629. The cubic root of 42226730 is about 348.2270339981.

Adding to 42226730 its reverse (3762224), we get a palindrome (45988954).

The spelling of 42226730 in words is "forty-two million, two hundred twenty-six thousand, seven hundred thirty".