242473261 has 4 divisors (see below), whose sum is σ = 256736412. Its totient is φ = 228210112.

The previous prime is 242473249. The next prime is 242473277. The reversal of 242473261 is 162374242.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198979236 + 43494025 = 14106^2 + 6595^2 .

It is a cyclic number.

It is not a de Polignac number, because 242473261 - 2⁹ = 242472749 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242473961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7131550 + ... + 7131583.

It is an arithmetic number, because the mean of its divisors is an integer number (64184103).

Almost surely, 2^242473261 is an apocalyptic number.

It is an amenable number.

242473261 is a deficient number, since it is larger than the sum of its proper divisors (14263151).

242473261 is a wasteful number, since it uses less digits than its factorization.

242473261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263150.

The product of its digits is 16128, while the sum is 31.

The square root of 242473261 is about 15571.5529411809. The cubic root of 242473261 is about 623.5739313198.

The spelling of 242473261 in words is "two hundred forty-two million, four hundred seventy-three thousand, two hundred sixty-one".