242291447 has 4 divisors (see below), whose sum is σ = 242323776. Its totient is φ = 242259120.

The previous prime is 242291437. The next prime is 242291459. The reversal of 242291447 is 744192242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 744192242 = 2 ⋅372096121.

It is a cyclic number.

It is not a de Polignac number, because 242291447 - 2⁴ = 242291431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242291417) 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, 1547 + ... + 22067.

It is an arithmetic number, because the mean of its divisors is an integer number (60580944).

Almost surely, 2^242291447 is an apocalyptic number.

242291447 is a deficient number, since it is larger than the sum of its proper divisors (32329).

242291447 is a wasteful number, since it uses less digits than its factorization.

242291447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32328.

The product of its digits is 32256, while the sum is 35.

The square root of 242291447 is about 15565.7138287969. The cubic root of 242291447 is about 623.4180339653.

The spelling of 242291447 in words is "two hundred forty-two million, two hundred ninety-one thousand, four hundred forty-seven".