242319421 has 4 divisors (see below), whose sum is σ = 252855072. Its totient is φ = 231783772.

The previous prime is 242319419. The next prime is 242319433. The reversal of 242319421 is 124913242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124913242 = 2 ⋅62456621.

It is a cyclic number.

It is not a de Polignac number, because 242319421 - 2¹ = 242319419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242319421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242319481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5267791 + ... + 5267836.

It is an arithmetic number, because the mean of its divisors is an integer number (63213768).

Almost surely, 2^242319421 is an apocalyptic number.

It is an amenable number.

242319421 is a deficient number, since it is larger than the sum of its proper divisors (10535651).

242319421 is a wasteful number, since it uses less digits than its factorization.

242319421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535650.

The product of its digits is 3456, while the sum is 28.

The square root of 242319421 is about 15566.6123803479. The cubic root of 242319421 is about 623.4420254917.

The spelling of 242319421 in words is "two hundred forty-two million, three hundred nineteen thousand, four hundred twenty-one".