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242120441 = 1671449823
BaseRepresentation
bin11100110111001…
…11011011111001
3121212120222210202
432123213123321
5443440323231
640005251545
75666663333
oct1633473371
9555528722
10242120441
11114741742
1269103bb5
133b214044
1424228453
15163c95cb
hexe6e76f9

242120441 has 4 divisors (see below), whose sum is σ = 243570432. Its totient is φ = 240670452.

The previous prime is 242120413. The next prime is 242120503. The reversal of 242120441 is 144021242.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-242120441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242120141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 724745 + ... + 725078.

It is an arithmetic number, because the mean of its divisors is an integer number (60892608).

Almost surely, 2242120441 is an apocalyptic number.

It is an amenable number.

242120441 is a deficient number, since it is larger than the sum of its proper divisors (1449991).

242120441 is a wasteful number, since it uses less digits than its factorization.

242120441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449990.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 242120441 is about 15560.2198249254. The cubic root of 242120441 is about 623.2713327970.

Adding to 242120441 its reverse (144021242), we get a palindrome (386141683).

The spelling of 242120441 in words is "two hundred forty-two million, one hundred twenty thousand, four hundred forty-one".

Divisors: 1 167 1449823 242120441