242690181 has 16 divisors (see below), whose sum is σ = 357519744. Its totient is φ = 145654784.

The previous prime is 242690171. The next prime is 242690197. The reversal of 242690181 is 181096242.

242690181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 242690181 - 2⁷ = 242690053 is a prime.

It is a super-2 number, since 2×242690181² = 117797047907625522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242690101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102276 + ... + 104621.

It is an arithmetic number, because the mean of its divisors is an integer number (22344984).

Almost surely, 2^242690181 is an apocalyptic number.

It is an amenable number.

242690181 is a deficient number, since it is larger than the sum of its proper divisors (114829563).

242690181 is a wasteful number, since it uses less digits than its factorization.

242690181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206940.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 242690181 is about 15578.5166495402. The cubic root of 242690181 is about 623.7598285741.

The spelling of 242690181 in words is "two hundred forty-two million, six hundred ninety thousand, one hundred eighty-one".