242854889 has 2 divisors, whose sum is σ = 242854890. Its totient is φ = 242854888.

The previous prime is 242854883. The next prime is 242854897. The reversal of 242854889 is 988458242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227014489 + 15840400 = 15067^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 242854889 - 2⁴ = 242854873 is a prime.

It is a super-2 number, since 2×242854889² = 117956994222404642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242854883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121427444 + 121427445.

It is an arithmetic number, because the mean of its divisors is an integer number (121427445).

Almost surely, 2^242854889 is an apocalyptic number.

It is an amenable number.

242854889 is a deficient number, since it is larger than the sum of its proper divisors (1).

242854889 is an equidigital number, since it uses as much as digits as its factorization.

242854889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1474560, while the sum is 50.

The square root of 242854889 is about 15583.8021355509. The cubic root of 242854889 is about 623.9009069374.

The spelling of 242854889 in words is "two hundred forty-two million, eight hundred fifty-four thousand, eight hundred eighty-nine".