42735226 has 4 divisors (see below), whose sum is σ = 64102842. Its totient is φ = 21367612.

The previous prime is 42735191. The next prime is 42735257. The reversal of 42735226 is 62253724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30239001 + 12496225 = 5499^2 + 3535^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10683805 + ... + 10683808.

Almost surely, 2^42735226 is an apocalyptic number.

42735226 is the 4135-th centered pentagonal number.

42735226 is a deficient number, since it is larger than the sum of its proper divisors (21367616).

42735226 is a wasteful number, since it uses less digits than its factorization.

42735226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21367615.

The product of its digits is 20160, while the sum is 31.

The square root of 42735226 is about 6537.2185216650. The cubic root of 42735226 is about 349.6192485304.

It can be divided in two parts, 427 and 35226, that added together give a palindrome (35653).

The spelling of 42735226 in words is "forty-two million, seven hundred thirty-five thousand, two hundred twenty-six".