42087226 has 4 divisors (see below), whose sum is σ = 63130842. Its totient is φ = 21043612.

The previous prime is 42087211. The next prime is 42087251. The reversal of 42087226 is 62278024.

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., 30858025 + 11229201 = 5555^2 + 3351^2 .

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 as a sum of consecutive naturals, namely, 10521805 + ... + 10521808.

Almost surely, 2^42087226 is an apocalyptic number.

42087226 is a deficient number, since it is larger than the sum of its proper divisors (21043616).

42087226 is a wasteful number, since it uses less digits than its factorization.

42087226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21043615.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 42087226 is about 6487.4668399923. The cubic root of 42087226 is about 347.8431329377.

The spelling of 42087226 in words is "forty-two million, eighty-seven thousand, two hundred twenty-six".