42223445 has 16 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 30517440.

The previous prime is 42223429. The next prime is 42223513. The reversal of 42223445 is 54432224.

It is a happy number.

It is not a de Polignac number, because 42223445 - 2⁴ = 42223429 is a prime.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6887 + ... + 11483.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^42223445 is an apocalyptic number.

It is an amenable number.

42223445 is a deficient number, since it is larger than the sum of its proper divisors (13393963).

42223445 is a wasteful number, since it uses less digits than its factorization.

42223445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780.

The product of its digits is 7680, while the sum is 26.

The square root of 42223445 is about 6497.9569866228. The cubic root of 42223445 is about 348.2180037348.

Adding to 42223445 its reverse (54432224), we get a palindrome (96655669).

It can be divided in two parts, 422234 and 45, that multiplied together give a triangular number (19000530 = T₆₁₆₄).

The spelling of 42223445 in words is "forty-two million, two hundred twenty-three thousand, four hundred forty-five".