42220426 has 8 divisors (see below), whose sum is σ = 64198404. Its totient is φ = 20820960.

The previous prime is 42220393. The next prime is 42220463. The reversal of 42220426 is 62402224.

It can be written as a sum of positive squares in 2 ways, for example, as 39501225 + 2719201 = 6285^2 + 1649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42220397 and 42220406.

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 3 ways as a sum of consecutive naturals, for example, 144445 + ... + 144736.

Almost surely, 2^42220426 is an apocalyptic number.

42220426 is a deficient number, since it is larger than the sum of its proper divisors (21977978).

42220426 is a wasteful number, since it uses less digits than its factorization.

42220426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289256.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42220426 is about 6497.7246786856. The cubic root of 42220426 is about 348.2097042761.

The spelling of 42220426 in words is "forty-two million, two hundred twenty thousand, four hundred twenty-six".