242544619 has 2 divisors, whose sum is σ = 242544620. Its totient is φ = 242544618.

The previous prime is 242544613. The next prime is 242544647. The reversal of 242544619 is 916445242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242544619 - 2³ = 242544611 is a prime.

It is a super-2 number, since 2×242544619² = 117655784411710322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242544611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121272309 + 121272310.

It is an arithmetic number, because the mean of its divisors is an integer number (121272310).

Almost surely, 2^242544619 is an apocalyptic number.

242544619 is a deficient number, since it is larger than the sum of its proper divisors (1).

242544619 is an equidigital number, since it uses as much as digits as its factorization.

242544619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 242544619 is about 15573.8440662542. The cubic root of 242544619 is about 623.6350963105.

The spelling of 242544619 in words is "two hundred forty-two million, five hundred forty-four thousand, six hundred nineteen".