43102420 has 12 divisors (see below), whose sum is σ = 90515124. Its totient is φ = 17240960.

The previous prime is 43102399. The next prime is 43102427. The reversal of 43102420 is 2420134.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 16744464 = 5134^2 + 4092^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43102394 and 43102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43102427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077541 + ... + 1077580.

It is an arithmetic number, because the mean of its divisors is an integer number (7542927).

Almost surely, 2^43102420 is an apocalyptic number.

It is an amenable number.

43102420 is an abundant number, since it is smaller than the sum of its proper divisors (47412704).

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

43102420 is a wasteful number, since it uses less digits than its factorization.

43102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155130 (or 2155128 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 43102420 is about 6565.2433313625. The cubic root of 43102420 is about 350.6177390006.

Adding to 43102420 its reverse (2420134), we get a palindrome (45522554).

The spelling of 43102420 in words is "forty-three million, one hundred two thousand, four hundred twenty".