120500421531 has 16 divisors (see below), whose sum is σ = 193283884800. Its totient is φ = 65233310688.

The previous prime is 120500421523. The next prime is 120500421551. The reversal of 120500421531 is 135124005021.

It is a happy number.

It is not a de Polignac number, because 120500421531 - 2³ = 120500421523 is a prime.

It is a super-2 number, since 2×120500421531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120500421551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151002636 + ... + 151003433.

It is an arithmetic number, because the mean of its divisors is an integer number (12080242800).

Almost surely, 2^120500421531 is an apocalyptic number.

120500421531 is a deficient number, since it is larger than the sum of its proper divisors (72783463269).

120500421531 is a wasteful number, since it uses less digits than its factorization.

120500421531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302006098.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 120500421531 its reverse (135124005021), we get a palindrome (255624426552).

The spelling of 120500421531 in words is "one hundred twenty billion, five hundred million, four hundred twenty-one thousand, five hundred thirty-one".