242291573 has 4 divisors (see below), whose sum is σ = 246263628. Its totient is φ = 238319520.

The previous prime is 242291501. The next prime is 242291597. The reversal of 242291573 is 375192242.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 375192242 = 2 ⋅187596121.

It can be written as a sum of positive squares in 2 ways, for example, as 26142769 + 216148804 = 5113^2 + 14702^2 .

It is a cyclic number.

It is not a de Polignac number, because 242291573 - 2¹⁰ = 242290549 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 (242291773) 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, 1985936 + ... + 1986057.

It is an arithmetic number, because the mean of its divisors is an integer number (61565907).

Almost surely, 2^242291573 is an apocalyptic number.

It is an amenable number.

242291573 is a deficient number, since it is larger than the sum of its proper divisors (3972055).

242291573 is an equidigital number, since it uses as much as digits as its factorization.

242291573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972054.

The product of its digits is 30240, while the sum is 35.

The square root of 242291573 is about 15565.7178761534. The cubic root of 242291573 is about 623.4181420316.

The spelling of 242291573 in words is "two hundred forty-two million, two hundred ninety-one thousand, five hundred seventy-three".