242081481 has 4 divisors (see below), whose sum is σ = 322775312. Its totient is φ = 161387652.

The previous prime is 242081461. The next prime is 242081501. The reversal of 242081481 is 184180242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (242081461) and next prime (242081501).

It is not a de Polignac number, because 242081481 - 2⁷ = 242081353 is a prime.

It is a super-2 number, since 2×242081481² = 117206886886306722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242081461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40346911 + ... + 40346916.

It is an arithmetic number, because the mean of its divisors is an integer number (80693828).

Almost surely, 2^242081481 is an apocalyptic number.

It is an amenable number.

242081481 is a deficient number, since it is larger than the sum of its proper divisors (80693831).

242081481 is an equidigital number, since it uses as much as digits as its factorization.

242081481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80693830.

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 242081481 is about 15558.9678642254. The cubic root of 242081481 is about 623.2379004639.

The spelling of 242081481 in words is "two hundred forty-two million, eighty-one thousand, four hundred eighty-one".