42443040 has 48 divisors (see below), whose sum is σ = 133697088. Its totient is φ = 11318016.

The previous prime is 42443039. The next prime is 42443069. The reversal of 42443040 is 4034424.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 42442998 and 42443016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43732 + ... + 44691.

It is an arithmetic number, because the mean of its divisors is an integer number (2785356).

Almost surely, 2^42443040 is an apocalyptic number.

42443040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42443040 is an abundant number, since it is smaller than the sum of its proper divisors (91254048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42443040 is a wasteful number, since it uses less digits than its factorization.

42443040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88441 (or 88433 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42443040 is about 6514.8323078956. The cubic root of 42443040 is about 348.8206290579.

Adding to 42443040 its reverse (4034424), we get a palindrome (46477464).

The spelling of 42443040 in words is "forty-two million, four hundred forty-three thousand, forty".