Search a number
-
+
242120545421 = 1033237172617
BaseRepresentation
bin1110000101111110000…
…0100101010010001101
3212010221210112002110012
43201133200211102031
512431330324423141
6303121215323005
723330654451656
oct3413740452215
9763853462405
10242120545421
1193756810417
123ab11820465
1319aa7804031
14ba0c16652d
1564711d0ceb
hex385f82548d

242120545421 has 8 divisors (see below), whose sum is σ = 244482149184. Its totient is φ = 239759151840.

The previous prime is 242120545393. The next prime is 242120545427. The reversal of 242120545421 is 124545021242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-242120545421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242120545427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3297905 + ... + 3370521.

It is an arithmetic number, because the mean of its divisors is an integer number (30560268648).

Almost surely, 2242120545421 is an apocalyptic number.

It is an amenable number.

242120545421 is a deficient number, since it is larger than the sum of its proper divisors (2361603763).

242120545421 is a wasteful number, since it uses less digits than its factorization.

242120545421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105091.

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 242120545421 its reverse (124545021242), we get a palindrome (366665566663).

The spelling of 242120545421 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, four hundred twenty-one".

Divisors: 1 103 32371 72617 3334213 7479551 2350684907 242120545421