43121028 has 24 divisors (see below), whose sum is σ = 104086080. Its totient is φ = 13877920.

The previous prime is 43121011. The next prime is 43121033. The reversal of 43121028 is 82012134.

It is a junction number, because it is equal to n+sod(n) for n = 43120995 and 43121013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61608 + ... + 62303.

It is an arithmetic number, because the mean of its divisors is an integer number (4336920).

Almost surely, 2^43121028 is an apocalyptic number.

It is an amenable number.

43121028 is an abundant number, since it is smaller than the sum of its proper divisors (60965052).

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

43121028 is a wasteful number, since it uses less digits than its factorization.

43121028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123947 (or 123945 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 43121028 is about 6566.6603384064. The cubic root of 43121028 is about 350.6681874923.

The spelling of 43121028 in words is "forty-three million, one hundred twenty-one thousand, twenty-eight".