302020144420 has 48 divisors (see below), whose sum is σ = 637058500848. Its totient is φ = 120271933440.

The previous prime is 302020144411. The next prime is 302020144429. The reversal of 302020144420 is 24441020203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (302020144411) and next prime (302020144429).

It can be written as a sum of positive squares in 8 ways, for example, as 917726436 + 301102417984 = 30294^2 + 548728^2 .

It is a junction number, because it is equal to n+sod(n) for n = 302020144391 and 302020144400.

It is not an unprimeable number, because it can be changed into a prime (302020144429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22343584 + ... + 22357096.

It is an arithmetic number, because the mean of its divisors is an integer number (13272052101).

Almost surely, 2^302020144420 is an apocalyptic number.

It is an amenable number.

302020144420 is an abundant number, since it is smaller than the sum of its proper divisors (335038356428).

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

302020144420 is a wasteful number, since it uses less digits than its factorization.

302020144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18400 (or 18398 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 302020144420 its reverse (24441020203), we get a palindrome (326461164623).

The spelling of 302020144420 in words is "three hundred two billion, twenty million, one hundred forty-four thousand, four hundred twenty".