43421002120 has 16 divisors (see below), whose sum is σ = 97697254860. Its totient is φ = 17368400832.

The previous prime is 43421002091. The next prime is 43421002139. The reversal of 43421002120 is 2120012434.

It can be written as a sum of positive squares in 2 ways, for example, as 41966800164 + 1454201956 = 204858^2 + 38134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542762487 + ... + 542762566.

Almost surely, 2^43421002120 is an apocalyptic number.

43421002120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43421002120 is an abundant number, since it is smaller than the sum of its proper divisors (54276252740).

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

43421002120 is a wasteful number, since it uses less digits than its factorization.

43421002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085525064 (or 1085525060 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 43421002120 its reverse (2120012434), we get a palindrome (45541014554).

The spelling of 43421002120 in words is "forty-three billion, four hundred twenty-one million, two thousand, one hundred twenty".