40321240420440 has 192 divisors, whose sum is σ = 142494077836800. Its totient is φ = 9099621603072.

The previous prime is 40321240420427. The next prime is 40321240420463. The reversal of 40321240420440 is 4402404212304.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40321240420398 and 40321240420407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42936454 + ... + 43865493.

It is an arithmetic number, because the mean of its divisors is an integer number (742156655400).

Almost surely, 2^{40321240420440} is an apocalyptic number.

40321240420440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40321240420440 is an abundant number, since it is smaller than the sum of its proper divisors (102172837416360).

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

40321240420440 is a wasteful number, since it uses less digits than its factorization.

40321240420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86802054 (or 86802043 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 40321240420440 its reverse (4402404212304), we get a palindrome (44723644632744).

The spelling of 40321240420440 in words is "forty trillion, three hundred twenty-one billion, two hundred forty million, four hundred twenty thousand, four hundred forty".