4312040420 has 12 divisors (see below), whose sum is σ = 9055284924. Its totient is φ = 1724816160.

The previous prime is 4312040413. The next prime is 4312040503. The reversal of 4312040420 is 240402134.

It can be written as a sum of positive squares in 2 ways, for example, as 1263233764 + 3048806656 = 35542^2 + 55216^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 215602021 = 4312040420 / (4 + 3 + 1 + 2 + 0 + 4 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 4312040392 and 4312040401.

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, 107800991 + ... + 107801030.

It is an arithmetic number, because the mean of its divisors is an integer number (754607077).

Almost surely, 2^4312040420 is an apocalyptic number.

It is an amenable number.

4312040420 is an abundant number, since it is smaller than the sum of its proper divisors (4743244504).

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

4312040420 is a wasteful number, since it uses less digits than its factorization.

4312040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215602030 (or 215602028 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4312040420 is about 65666.1284072695. The cubic root of 4312040420 is about 1627.6496946239.

Adding to 4312040420 its reverse (240402134), we get a palindrome (4552442554).

The spelling of 4312040420 in words is "four billion, three hundred twelve million, forty thousand, four hundred twenty".