242155345 has 8 divisors (see below), whose sum is σ = 292875264. Its totient is φ = 192198384.

The previous prime is 242155321. The next prime is 242155373. The reversal of 242155345 is 543551242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242155345 - 2⁷ = 242155217 is a prime.

It is a super-2 number, since 2×242155345² = 117278422224138050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190039 + ... + 191308.

It is an arithmetic number, because the mean of its divisors is an integer number (36609408).

Almost surely, 2^242155345 is an apocalyptic number.

It is an amenable number.

242155345 is a deficient number, since it is larger than the sum of its proper divisors (50719919).

242155345 is a wasteful number, since it uses less digits than its factorization.

242155345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381479.

The product of its digits is 24000, while the sum is 31.

The square root of 242155345 is about 15561.3413624919. The cubic root of 242155345 is about 623.3012815520.

The spelling of 242155345 in words is "two hundred forty-two million, one hundred fifty-five thousand, three hundred forty-five".