242020351 has 4 divisors (see below), whose sum is σ = 243372600. Its totient is φ = 240668104.

The previous prime is 242020333. The next prime is 242020393. The reversal of 242020351 is 153020242.

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 242020351 - 2⁷ = 242020223 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 (242020451) 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, 675856 + ... + 676213.

It is an arithmetic number, because the mean of its divisors is an integer number (60843150).

Almost surely, 2^242020351 is an apocalyptic number.

242020351 is a deficient number, since it is larger than the sum of its proper divisors (1352249).

242020351 is a wasteful number, since it uses less digits than its factorization.

242020351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352248.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 242020351 is about 15557.0032782667. The cubic root of 242020351 is about 623.1854363927.

Adding to 242020351 its reverse (153020242), we get a palindrome (395040593).

The spelling of 242020351 in words is "two hundred forty-two million, twenty thousand, three hundred fifty-one".