120500421545 has 16 divisors (see below), whose sum is σ = 165263908608. Its totient is φ = 82625766720.

The previous prime is 120500421523. The next prime is 120500421551. The reversal of 120500421545 is 545124005021.

It is not a de Polignac number, because 120500421545 - 2¹⁸ = 120500159401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276772 + ... + 1367898.

It is an arithmetic number, because the mean of its divisors is an integer number (10328994288).

Almost surely, 2^120500421545 is an apocalyptic number.

It is an amenable number.

120500421545 is a deficient number, since it is larger than the sum of its proper divisors (44763487063).

120500421545 is an equidigital number, since it uses as much as digits as its factorization.

120500421545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128920.

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

Adding to 120500421545 its reverse (545124005021), we get a palindrome (665624426566).

The spelling of 120500421545 in words is "one hundred twenty billion, five hundred million, four hundred twenty-one thousand, five hundred forty-five".