42012434440 has 64 divisors (see below), whose sum is σ = 101189736000. Its totient is φ = 15650645760.

The previous prime is 42012434423. The next prime is 42012434449. The reversal of 42012434440 is 4443421024.

It is a super-2 number, since 2×42012434440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42012434399 and 42012434408.

It is not an unprimeable number, because it can be changed into a prime (42012434449) by changing a digit.

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, 423631 + ... + 513310.

It is an arithmetic number, because the mean of its divisors is an integer number (1581089625).

Almost surely, 2^42012434440 is an apocalyptic number.

42012434440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42012434440 is an abundant number, since it is smaller than the sum of its proper divisors (59177301560).

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

42012434440 is a wasteful number, since it uses less digits than its factorization.

42012434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937030 (or 937026 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42012434440 its reverse (4443421024), we get a palindrome (46455855464).

The spelling of 42012434440 in words is "forty-two billion, twelve million, four hundred thirty-four thousand, four hundred forty".