3102440420 has 12 divisors (see below), whose sum is σ = 6515124924. Its totient is φ = 1240976160.

The previous prime is 3102440401. The next prime is 3102440431. The reversal of 3102440420 is 240442013.

It can be written as a sum of positive squares in 2 ways, for example, as 343879936 + 2758560484 = 18544^2 + 52522^2 .

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: 155122021 = 3102440420 / (3 + 1 + 0 + 2 + 4 + 4 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 3102440392 and 3102440401.

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, 77560991 + ... + 77561030.

It is an arithmetic number, because the mean of its divisors is an integer number (542927077).

Almost surely, 2^3102440420 is an apocalyptic number.

It is an amenable number.

3102440420 is an abundant number, since it is smaller than the sum of its proper divisors (3412684504).

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

3102440420 is a wasteful number, since it uses less digits than its factorization.

3102440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155122030 (or 155122028 counting only the distinct ones).

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

The square root of 3102440420 is about 55699.5549353853. The cubic root of 3102440420 is about 1458.4822565159.

Adding to 3102440420 its reverse (240442013), we get a palindrome (3342882433).

The spelling of 3102440420 in words is "three billion, one hundred two million, four hundred forty thousand, four hundred twenty".