120143402505 has 48 divisors (see below), whose sum is σ = 238043744640. Its totient is φ = 54912225024.

The previous prime is 120143402497. The next prime is 120143402551. The reversal of 120143402505 is 505204341021.

120143402505 is a `hidden beast` number, since 1 + 201 + 4 + 3 + 402 + 50 + 5 = 666.

It is not a de Polignac number, because 120143402505 - 2³ = 120143402497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1758514 + ... + 1825556.

It is an arithmetic number, because the mean of its divisors is an integer number (4959244680).

Almost surely, 2^120143402505 is an apocalyptic number.

120143402505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120143402505 is a deficient number, since it is larger than the sum of its proper divisors (117900342135).

120143402505 is a wasteful number, since it uses less digits than its factorization.

120143402505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72750 (or 72747 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 120143402505 its reverse (505204341021), we get a palindrome (625347743526).

The spelling of 120143402505 in words is "one hundred twenty billion, one hundred forty-three million, four hundred two thousand, five hundred five".