242130402 has 24 divisors (see below), whose sum is σ = 526915740. Its totient is φ = 80356320.

The previous prime is 242130389. The next prime is 242130419. The reversal of 242130402 is 204031242.

It can be written as a sum of positive squares in 2 ways, for example, as 238054041 + 4076361 = 15429^2 + 2019^2 .

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

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25249 + ... + 33492.

Almost surely, 2^242130402 is an apocalyptic number.

242130402 is an abundant number, since it is smaller than the sum of its proper divisors (284785338).

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

242130402 is a wasteful number, since it uses less digits than its factorization.

242130402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58978 (or 58975 counting only the distinct ones).

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

The square root of 242130402 is about 15560.5399006590. The cubic root of 242130402 is about 623.2798799489.

Adding to 242130402 its reverse (204031242), we get a palindrome (446161644).

It can be divided in two parts, 2421 and 30402, that added together give a palindrome (32823).

The spelling of 242130402 in words is "two hundred forty-two million, one hundred thirty thousand, four hundred two".