302742172 has 12 divisors (see below), whose sum is σ = 529945416. Its totient is φ = 151329200.

The previous prime is 302742161. The next prime is 302742173. The reversal of 302742172 is 271247203.

It is a self number, because there is not a number n which added to its sum of digits gives 302742172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302742173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10422 + ... + 26722.

It is an arithmetic number, because the mean of its divisors is an integer number (44162118).

Almost surely, 2^302742172 is an apocalyptic number.

It is an amenable number.

302742172 is a deficient number, since it is larger than the sum of its proper divisors (227203244).

302742172 is a wasteful number, since it uses less digits than its factorization.

302742172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20948 (or 20946 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 302742172 is about 17399.4876936075. The cubic root of 302742172 is about 671.4664338648.

Adding to 302742172 its reverse (271247203), we get a palindrome (573989375).

The spelling of 302742172 in words is "three hundred two million, seven hundred forty-two thousand, one hundred seventy-two".