40242110420 has 24 divisors (see below), whose sum is σ = 87422517000. Its totient is φ = 15541780352.

The previous prime is 40242110411. The next prime is 40242110431. The reversal of 40242110420 is 2401124204.

It can be written as a sum of positive squares in 4 ways, for example, as 1182121924 + 39059988496 = 34382^2 + 197636^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40242110392 and 40242110401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34690895 + ... + 34692054.

It is an arithmetic number, because the mean of its divisors is an integer number (3642604875).

Almost surely, 2^40242110420 is an apocalyptic number.

It is an amenable number.

40242110420 is an abundant number, since it is smaller than the sum of its proper divisors (47180406580).

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

40242110420 is a wasteful number, since it uses less digits than its factorization.

40242110420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69382987 (or 69382985 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 40242110420 its reverse (2401124204), we get a palindrome (42643234624).

The spelling of 40242110420 in words is "forty billion, two hundred forty-two million, one hundred ten thousand, four hundred twenty".