302120442 has 48 divisors (see below), whose sum is σ = 731072160. Its totient is φ = 92958192.

The previous prime is 302120419. The next prime is 302120443. The reversal of 302120442 is 244021203.

It is a super-2 number, since 2×302120442² = 182553522948550728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (302120443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17592 + ... + 30227.

It is an arithmetic number, because the mean of its divisors is an integer number (15230670).

Almost surely, 2^302120442 is an apocalyptic number.

302120442 is an abundant number, since it is smaller than the sum of its proper divisors (428951718).

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

302120442 is a wasteful number, since it uses less digits than its factorization.

302120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47849 (or 47837 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 302120442 is about 17381.6121806926. The cubic root of 302120442 is about 671.0064638833.

Adding to 302120442 its reverse (244021203), we get a palindrome (546141645).

The spelling of 302120442 in words is "three hundred two million, one hundred twenty thousand, four hundred forty-two".