105502120520240 has 40 divisors (see below), whose sum is σ = 248747253183648. Its totient is φ = 41606470062080.

The previous prime is 105502120520213. The next prime is 105502120520267. The reversal of 105502120520240 is 42025021205501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (105502120520213) and next prime (105502120520267).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×105502120520240² (a number of 29 digits) contains 22 as substring.

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, 9287152817 + ... + 9287164176.

Almost surely, 2^{105502120520240} is an apocalyptic number.

105502120520240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105502120520240 is an abundant number, since it is smaller than the sum of its proper divisors (143245132663408).

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

105502120520240 is a wasteful number, since it uses less digits than its factorization.

105502120520240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18574317077 (or 18574317071 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 105502120520240 its reverse (42025021205501), we get a palindrome (147527141725741).

The spelling of 105502120520240 in words is "one hundred five trillion, five hundred two billion, one hundred twenty million, five hundred twenty thousand, two hundred forty".