242143556 has 6 divisors (see below), whose sum is σ = 423751230. Its totient is φ = 121071776.

The previous prime is 242143541. The next prime is 242143571. The reversal of 242143556 is 655341242.

242143556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (242143541) and next prime (242143571).

It can be written as a sum of positive squares in only one way, i.e., 241802500 + 341056 = 15550^2 + 584^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30267941 + ... + 30267948.

It is an arithmetic number, because the mean of its divisors is an integer number (70625205).

Almost surely, 2^242143556 is an apocalyptic number.

It is an amenable number.

242143556 is a deficient number, since it is larger than the sum of its proper divisors (181607674).

242143556 is a wasteful number, since it uses less digits than its factorization.

242143556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60535893 (or 60535891 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 242143556 is about 15560.9625666281. The cubic root of 242143556 is about 623.2911665325.

Adding to 242143556 its reverse (655341242), we get a palindrome (897484798).

The spelling of 242143556 in words is "two hundred forty-two million, one hundred forty-three thousand, five hundred fifty-six".