Search a number
-
+
243121021532 = 22227267754429
BaseRepresentation
bin1110001001101100100…
…1000110001001011100
3212020112112002112122222
43202123021012021130
512440402440142112
6303404355124512
723364523404644
oct3423311061134
9766475075588
10243121021532
119411a529984
123b1508a3738
1319c06b79b2c
14baa4d99524
1564cde58372
hex389b24625c

243121021532 has 12 divisors (see below), whose sum is σ = 427336070280. Its totient is φ = 121025001456.

The previous prime is 243121021513. The next prime is 243121021543. The reversal of 243121021532 is 235120121342.

It is a super-2 number, since 2×2431210215322 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133876307 + ... + 133878122.

It is an arithmetic number, because the mean of its divisors is an integer number (35611339190).

Almost surely, 2243121021532 is an apocalyptic number.

It is an amenable number.

243121021532 is a deficient number, since it is larger than the sum of its proper divisors (184215048748).

243121021532 is a wasteful number, since it uses less digits than its factorization.

243121021532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267754660 (or 267754658 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243121021532 its reverse (235120121342), we get a palindrome (478241142874).

The spelling of 243121021532 in words is "two hundred forty-three billion, one hundred twenty-one million, twenty-one thousand, five hundred thirty-two".

Divisors: 1 2 4 227 454 908 267754429 535508858 1071017716 60780255383 121560510766 243121021532