40620242420 has 24 divisors (see below), whose sum is σ = 87383059848. Its totient is φ = 15851801600.

The previous prime is 40620242407. The next prime is 40620242437. The reversal of 40620242420 is 2424202604.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2650602256 + 37969640164 = 51484^2 + 194858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40620242420.

It is a congruent number.

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, 24767621 + ... + 24769260.

It is an arithmetic number, because the mean of its divisors is an integer number (3640960827).

Almost surely, 2^40620242420 is an apocalyptic number.

It is an amenable number.

40620242420 is an abundant number, since it is smaller than the sum of its proper divisors (46762817428).

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

40620242420 is a wasteful number, since it uses less digits than its factorization.

40620242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49536931 (or 49536929 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The spelling of 40620242420 in words is "forty billion, six hundred twenty million, two hundred forty-two thousand, four hundred twenty".