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120924149 = 313900779
BaseRepresentation
bin1110011010100…
…10011111110101
322102112120202012
413031102133311
5221424033044
615555454005
72665560353
oct715223765
9272476665
10120924149
1162293115
12345b7305
131c08b768
14120ba7d3
15a93959e
hex73527f5

120924149 has 4 divisors (see below), whose sum is σ = 124824960. Its totient is φ = 117023340.

The previous prime is 120924131. The next prime is 120924157. The reversal of 120924149 is 941429021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941429021 = 1372417617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120924149 is a prime.

It is a super-2 number, since 2×1209241492 = 29245299622748402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120924049) 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 3 ways as a sum of consecutive naturals, for example, 1950359 + ... + 1950420.

It is an arithmetic number, because the mean of its divisors is an integer number (31206240).

Almost surely, 2120924149 is an apocalyptic number.

It is an amenable number.

120924149 is a deficient number, since it is larger than the sum of its proper divisors (3900811).

120924149 is an equidigital number, since it uses as much as digits as its factorization.

120924149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900810.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 120924149 is about 10996.5516867789. The cubic root of 120924149 is about 494.5053712948.

The spelling of 120924149 in words is "one hundred twenty million, nine hundred twenty-four thousand, one hundred forty-nine".

Divisors: 1 31 3900779 120924149