42243023440 has 40 divisors (see below), whose sum is σ = 98283173760. Its totient is φ = 16885485696.

The previous prime is 42243023419. The next prime is 42243023447. The reversal of 42243023440 is 4432034224.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 42243023399 and 42243023408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243023447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66700 + ... + 298219.

It is an arithmetic number, because the mean of its divisors is an integer number (2457079344).

Almost surely, 2^42243023440 is an apocalyptic number.

42243023440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42243023440 is an abundant number, since it is smaller than the sum of its proper divisors (56040150320).

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

42243023440 is a wasteful number, since it uses less digits than its factorization.

42243023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366379 (or 366373 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42243023440 its reverse (4432034224), we get a palindrome (46675057664).

The spelling of 42243023440 in words is "forty-two billion, two hundred forty-three million, twenty-three thousand, four hundred forty".