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243120443021 is a prime number
BaseRepresentation
bin1110001001101100011…
…0111000111010001101
3212020112111000011002122
43202123012320322031
512440402313134041
6303404334502325
723364515445221
oct3423306707215
9766474004078
10243120443021
119411a174275
123b1506649a5
1319c06a06711
14baa4c88781
1564cdd91c4b
hex389b1b8e8d

243120443021 has 2 divisors, whose sum is σ = 243120443022. Its totient is φ = 243120443020.

The previous prime is 243120443017. The next prime is 243120443057. The reversal of 243120443021 is 120344021342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173180822500 + 69939620521 = 416150^2 + 264461^2 .

It is a cyclic number.

It is not a de Polignac number, because 243120443021 - 22 = 243120443017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243120443821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560221510 + 121560221511.

It is an arithmetic number, because the mean of its divisors is an integer number (121560221511).

Almost surely, 2243120443021 is an apocalyptic number.

It is an amenable number.

243120443021 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120443021 is an equidigital number, since it uses as much as digits as its factorization.

243120443021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 243120443021 in words is "two hundred forty-three billion, one hundred twenty million, four hundred forty-three thousand, twenty-one".