242402421 has 8 divisors (see below), whose sum is σ = 323897184. Its totient is φ = 161254640.

The previous prime is 242402383. The next prime is 242402431. The reversal of 242402421 is 124204242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242402421 - 2⁶ = 242402357 is a prime.

It is a super-2 number, since 2×242402421² = 117517867413322482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242402431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85110 + ... + 87911.

It is an arithmetic number, because the mean of its divisors is an integer number (40487148).

Almost surely, 2^242402421 is an apocalyptic number.

It is an amenable number.

242402421 is a deficient number, since it is larger than the sum of its proper divisors (81494763).

242402421 is a wasteful number, since it uses less digits than its factorization.

242402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173491.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 242402421 is about 15569.2781142865. The cubic root of 242402421 is about 623.5131984652.

Adding to 242402421 its reverse (124204242), we get a palindrome (366606663).

The spelling of 242402421 in words is "two hundred forty-two million, four hundred two thousand, four hundred twenty-one".