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120344130 = 2345148573
BaseRepresentation
bin1110010110001…
…00111001000010
322101110010010000
413023010321002
5221302003010
615535220430
72660623344
oct713047102
9271403100
10120344130
1161a27365
1234377716
131bc1775a
1411da9294
15a8727c0
hex72c4e42

120344130 has 40 divisors (see below), whose sum is σ = 323594172. Its totient is φ = 32091552.

The previous prime is 120344101. The next prime is 120344149. The reversal of 120344130 is 31443021.

It can be written as a sum of positive squares in 2 ways, for example, as 98188281 + 22155849 = 9909^2 + 4707^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73477 + ... + 75096.

Almost surely, 2120344130 is an apocalyptic number.

120344130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120344130 is an abundant number, since it is smaller than the sum of its proper divisors (203250042).

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

120344130 is a wasteful number, since it uses less digits than its factorization.

120344130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148592 (or 148583 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 120344130 is about 10970.1472187022. The cubic root of 120344130 is about 493.7134635145.

Adding to 120344130 its reverse (31443021), we get a palindrome (151787151).

The spelling of 120344130 in words is "one hundred twenty million, three hundred forty-four thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 148573 297146 445719 742865 891438 1337157 1485730 2228595 2674314 4011471 4457190 6685785 8022942 12034413 13371570 20057355 24068826 40114710 60172065 120344130