40120500305 has 8 divisors (see below), whose sum is σ = 48344371944. Its totient is φ = 31963219200.

The previous prime is 40120500281. The next prime is 40120500367. The reversal of 40120500305 is 50300502104.

It can be written as a sum of positive squares in 4 ways, for example, as 6769340176 + 33351160129 = 82276^2 + 182623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40120500305 - 2¹² = 40120496209 is a prime.

It is a Duffinian 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, 16646306 + ... + 16648715.

It is an arithmetic number, because the mean of its divisors is an integer number (6043046493).

Almost surely, 2^40120500305 is an apocalyptic number.

It is an amenable number.

40120500305 is a deficient number, since it is larger than the sum of its proper divisors (8223871639).

40120500305 is a wasteful number, since it uses less digits than its factorization.

40120500305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33295267.

The product of its (nonzero) digits is 600, while the sum is 20.

The spelling of 40120500305 in words is "forty billion, one hundred twenty million, five hundred thousand, three hundred five".