42997226 has 4 divisors (see below), whose sum is σ = 64495842. Its totient is φ = 21498612.

The previous prime is 42997223. The next prime is 42997243. The reversal of 42997226 is 62279924.

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., 34869025 + 8128201 = 5905^2 + 2851^2 .

It is a super-2 number, since 2×42997226² = 3697522887390152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42997223) 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 as a sum of consecutive naturals, namely, 10749305 + ... + 10749308.

Almost surely, 2^42997226 is an apocalyptic number.

42997226 is a deficient number, since it is larger than the sum of its proper divisors (21498616).

42997226 is a wasteful number, since it uses less digits than its factorization.

42997226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21498615.

The product of its digits is 108864, while the sum is 41.

The square root of 42997226 is about 6557.2270053735. The cubic root of 42997226 is about 350.3322722129.

The spelling of 42997226 in words is "forty-two million, nine hundred ninety-seven thousand, two hundred twenty-six".