43121130 has 32 divisors (see below), whose sum is σ = 111452544. Its totient is φ = 10614336.

The previous prime is 43121101. The next prime is 43121189. The reversal of 43121130 is 3112134.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 54894 + ... + 55673.

It is an arithmetic number, because the mean of its divisors is an integer number (3482892).

Almost surely, 2^43121130 is an apocalyptic number.

43121130 is an abundant number, since it is smaller than the sum of its proper divisors (68331414).

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

43121130 is a wasteful number, since it uses less digits than its factorization.

43121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110590.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 43121130 is about 6566.6681049068. The cubic root of 43121130 is about 350.6684639864.

Adding to 43121130 its reverse (3112134), we get a palindrome (46233264).

The spelling of 43121130 in words is "forty-three million, one hundred twenty-one thousand, one hundred thirty".