4132121420 has 24 divisors (see below), whose sum is σ = 9917091744. Its totient is φ = 1416727296.

The previous prime is 4132121381. The next prime is 4132121431. The reversal of 4132121420 is 241212314.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4132121392 and 4132121401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14757437 + ... + 14757716.

It is an arithmetic number, because the mean of its divisors is an integer number (413212156).

Almost surely, 2^4132121420 is an apocalyptic number.

It is an amenable number.

4132121420 is an abundant number, since it is smaller than the sum of its proper divisors (5784970324).

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

4132121420 is a wasteful number, since it uses less digits than its factorization.

4132121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29515169 (or 29515167 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4132121420 is about 64281.5791654188. The cubic root of 4132121420 is about 1604.6895515337.

Adding to 4132121420 its reverse (241212314), we get a palindrome (4373333734).

The spelling of 4132121420 in words is "four billion, one hundred thirty-two million, one hundred twenty-one thousand, four hundred twenty".