40424231440 has 40 divisors (see below), whose sum is σ = 98072705088. Its totient is φ = 15466661760.

The previous prime is 40424231437. The next prime is 40424231453. The reversal of 40424231440 is 4413242404.

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 = 40424231399 and 40424231408.

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, 10983006 + ... + 10986685.

Almost surely, 2^40424231440 is an apocalyptic number.

40424231440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40424231440 is an abundant number, since it is smaller than the sum of its proper divisors (57648473648).

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

40424231440 is a wasteful number, since it uses less digits than its factorization.

40424231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21969727 (or 21969721 counting only the distinct ones).

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

Adding to 40424231440 its reverse (4413242404), we get a palindrome (44837473844).

The spelling of 40424231440 in words is "forty billion, four hundred twenty-four million, two hundred thirty-one thousand, four hundred forty".