242233421 has 2 divisors, whose sum is σ = 242233422. Its totient is φ = 242233420.

The previous prime is 242233417. The next prime is 242233471. The reversal of 242233421 is 124332242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198528100 + 43705321 = 14090^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 242233421 - 2² = 242233417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242233471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121116710 + 121116711.

It is an arithmetic number, because the mean of its divisors is an integer number (121116711).

Almost surely, 2^242233421 is an apocalyptic number.

It is an amenable number.

242233421 is a deficient number, since it is larger than the sum of its proper divisors (1).

242233421 is an equidigital number, since it uses as much as digits as its factorization.

242233421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 23.

The square root of 242233421 is about 15563.8498129480. The cubic root of 242233421 is about 623.3682628550.

Adding to 242233421 its reverse (124332242), we get a palindrome (366565663).

The spelling of 242233421 in words is "two hundred forty-two million, two hundred thirty-three thousand, four hundred twenty-one".