242638148 has 6 divisors (see below), whose sum is σ = 424616766. Its totient is φ = 121319072.

The previous prime is 242638139. The next prime is 242638153. The reversal of 242638148 is 841836242.

It can be written as a sum of positive squares in only one way, i.e., 144192064 + 98446084 = 12008^2 + 9922^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30329765 + ... + 30329772.

It is an arithmetic number, because the mean of its divisors is an integer number (70769461).

Almost surely, 2^242638148 is an apocalyptic number.

It is an amenable number.

242638148 is a deficient number, since it is larger than the sum of its proper divisors (181978618).

242638148 is a wasteful number, since it uses less digits than its factorization.

242638148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60659541 (or 60659539 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 242638148 is about 15576.8465358044. The cubic root of 242638148 is about 623.7152471591.

The spelling of 242638148 in words is "two hundred forty-two million, six hundred thirty-eight thousand, one hundred forty-eight".