242533381 has 2 divisors, whose sum is σ = 242533382. Its totient is φ = 242533380.

The previous prime is 242533363. The next prime is 242533451. The reversal of 242533381 is 183335242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199092100 + 43441281 = 14110^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 242533381 - 2⁵ = 242533349 is a prime.

It is a super-2 number, since 2×242533381² = 117644881798582322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242533481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121266690 + 121266691.

It is an arithmetic number, because the mean of its divisors is an integer number (121266691).

Almost surely, 2^242533381 is an apocalyptic number.

It is an amenable number.

242533381 is a deficient number, since it is larger than the sum of its proper divisors (1).

242533381 is an equidigital number, since it uses as much as digits as its factorization.

242533381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 242533381 is about 15573.4832648319. The cubic root of 242533381 is about 623.6254643790.

The spelling of 242533381 in words is "two hundred forty-two million, five hundred thirty-three thousand, three hundred eighty-one".