242487149381 has 2 divisors, whose sum is σ = 242487149382. Its totient is φ = 242487149380.

The previous prime is 242487149369. The next prime is 242487149383. The reversal of 242487149381 is 183941784242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155288012356 + 87199137025 = 394066^2 + 295295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242487149381 is a prime.

It is a super-2 number, since 2×242487149381² (a number of 24 digits) contains 22 as substring.

Together with 242487149383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242487149383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121243574690 + 121243574691.

It is an arithmetic number, because the mean of its divisors is an integer number (121243574691).

Almost surely, 2^242487149381 is an apocalyptic number.

It is an amenable number.

242487149381 is a deficient number, since it is larger than the sum of its proper divisors (1).

242487149381 is an equidigital number, since it uses as much as digits as its factorization.

242487149381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The spelling of 242487149381 in words is "two hundred forty-two billion, four hundred eighty-seven million, one hundred forty-nine thousand, three hundred eighty-one".