242153147 has 4 divisors (see below), whose sum is σ = 242484240. Its totient is φ = 241822056.

The previous prime is 242153143. The next prime is 242153159. The reversal of 242153147 is 741351242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242153147 - 2² = 242153143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242153141) 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, 164447 + ... + 165912.

It is an arithmetic number, because the mean of its divisors is an integer number (60621060).

Almost surely, 2^242153147 is an apocalyptic number.

242153147 is a deficient number, since it is larger than the sum of its proper divisors (331093).

242153147 is an equidigital number, since it uses as much as digits as its factorization.

242153147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331092.

The product of its digits is 6720, while the sum is 29.

The square root of 242153147 is about 15561.2707385997. The cubic root of 242153147 is about 623.2993956822.

The spelling of 242153147 in words is "two hundred forty-two million, one hundred fifty-three thousand, one hundred forty-seven".