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120103240 = 23523130547
BaseRepresentation
bin1110010100010…
…10000101001000
322100222212200011
413022022011020
5221221300430
615530121304
72655601135
oct712120510
9270885604
10120103240
1161882384
1234280234
131bb61c0a
1411d4558c
15a82622a
hex728a148

120103240 has 32 divisors (see below), whose sum is σ = 281983680. Its totient is φ = 45952192.

The previous prime is 120103231. The next prime is 120103267. The reversal of 120103240 is 42301021.

It is a self number, because there is not a number n which added to its sum of digits gives 120103240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64354 + ... + 66193.

It is an arithmetic number, because the mean of its divisors is an integer number (8811990).

Almost surely, 2120103240 is an apocalyptic number.

120103240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120103240 is an abundant number, since it is smaller than the sum of its proper divisors (161880440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120103240 is a wasteful number, since it uses less digits than its factorization.

120103240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130581 (or 130577 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120103240 is about 10959.1623767512. The cubic root of 120103240 is about 493.3838252841.

Adding to 120103240 its reverse (42301021), we get a palindrome (162404261).

The spelling of 120103240 in words is "one hundred twenty million, one hundred three thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 130547 261094 522188 652735 1044376 1305470 2610940 3002581 5221880 6005162 12010324 15012905 24020648 30025810 60051620 120103240