42444464 has 10 divisors (see below), whose sum is σ = 82236180. Its totient is φ = 21222224.

The previous prime is 42444421. The next prime is 42444473. The reversal of 42444464 is 46444424.

It is a self number, because there is not a number n which added to its sum of digits gives 42444464.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326374 + ... + 1326405.

It is an arithmetic number, because the mean of its divisors is an integer number (8223618).

Almost surely, 2^42444464 is an apocalyptic number.

It is an amenable number.

42444464 is a deficient number, since it is larger than the sum of its proper divisors (39791716).

42444464 is a wasteful number, since it uses less digits than its factorization.

42444464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652787 (or 2652781 counting only the distinct ones).

The product of its digits is 49152, while the sum is 32.

The square root of 42444464 is about 6514.9415960544. The cubic root of 42444464 is about 348.8245300903.

Adding to 42444464 its reverse (46444424), we get a palindrome (88888888).

The spelling of 42444464 in words is "forty-two million, four hundred forty-four thousand, four hundred sixty-four".