242352981 has 12 divisors (see below), whose sum is σ = 376993708. Its totient is φ = 149140224.

The previous prime is 242352977. The next prime is 242352989. The reversal of 242352981 is 189253242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 126360081 + 115992900 = 11241^2 + 10770^2 .

It is not a de Polignac number, because 242352981 - 2² = 242352977 is a prime.

It is a super-2 number, since 2×242352981² = 117469934799172722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242352989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1035580 + ... + 1035813.

Almost surely, 2^242352981 is an apocalyptic number.

It is an amenable number.

242352981 is a deficient number, since it is larger than the sum of its proper divisors (134640727).

242352981 is a wasteful number, since it uses less digits than its factorization.

242352981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071412 (or 2071409 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 242352981 is about 15567.6902911126. The cubic root of 242352981 is about 623.4708053400.

The spelling of 242352981 in words is "two hundred forty-two million, three hundred fifty-two thousand, nine hundred eighty-one".