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120307540 = 22550311959
BaseRepresentation
bin1110010101110…
…11111101010100
322101101020220211
413022323331110
5221244320130
615534335204
72660411563
oct712737524
9271336824
10120307540
1161a01921
123435a504
131bc03bc2
1411d99bda
15a866a2a
hex72bbf54

120307540 has 24 divisors (see below), whose sum is σ = 253169280. Its totient is φ = 48023328.

The previous prime is 120307531. The next prime is 120307541. The reversal of 120307540 is 45703021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120307541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4081 + ... + 16039.

It is an arithmetic number, because the mean of its divisors is an integer number (10548720).

Almost surely, 2120307540 is an apocalyptic number.

120307540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120307540 is an abundant number, since it is smaller than the sum of its proper divisors (132861740).

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

120307540 is a wasteful number, since it uses less digits than its factorization.

120307540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471 (or 12469 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 120307540 is about 10968.4793841261. The cubic root of 120307540 is about 493.6634214482.

The spelling of 120307540 in words is "one hundred twenty million, three hundred seven thousand, five hundred forty".