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240368121 = 3376120849
BaseRepresentation
bin11100101001110…
…11100111111001
3121202021222002000
432110323213321
5443013234441
635503531213
75646044460
oct1624734771
9552258060
10240368121
11113755144
12685b9b09
133aa4c576
1423ccd9d7
15161802b6
hexe53b9f9

240368121 has 32 divisors (see below), whose sum is σ = 413664000. Its totient is φ = 135095040.

The previous prime is 240368111. The next prime is 240368129. The reversal of 240368121 is 121863042.

It is not a de Polignac number, because 240368121 - 211 = 240366073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (240368129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1105 + ... + 21953.

It is an arithmetic number, because the mean of its divisors is an integer number (12927000).

Almost surely, 2240368121 is an apocalyptic number.

240368121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240368121 is a deficient number, since it is larger than the sum of its proper divisors (173295879).

240368121 is a wasteful number, since it uses less digits than its factorization.

240368121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20926 (or 20920 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 240368121 is about 15503.8098866053. The cubic root of 240368121 is about 621.7640715282.

The spelling of 240368121 in words is "two hundred forty million, three hundred sixty-eight thousand, one hundred twenty-one".

Divisors: 1 3 7 9 21 27 61 63 183 189 427 549 1281 1647 3843 11529 20849 62547 145943 187641 437829 562923 1271789 1313487 3815367 3940461 8902523 11446101 26707569 34338303 80122707 240368121