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120430005 = 3537216991
BaseRepresentation
bin1110010110110…
…01110110110101
322101121110220120
413023121312311
5221312230010
615541122153
72661431613
oct713316665
9271543816
10120430005
1161a85933
12343b9359
131bc47877
1411dcc6b3
15a88ce70
hex72d9db5

120430005 has 16 divisors (see below), whose sum is σ = 197896704. Its totient is φ = 62493120.

The previous prime is 120429977. The next prime is 120430007. The reversal of 120430005 is 500034021.

It is not a de Polignac number, because 120430005 - 25 = 120429973 is a prime.

It is a super-2 number, since 2×1204300052 = 29006772208600050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120430007) 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 15 ways as a sum of consecutive naturals, for example, 107941 + ... + 109050.

It is an arithmetic number, because the mean of its divisors is an integer number (12368544).

Almost surely, 2120430005 is an apocalyptic number.

120430005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120430005 is a deficient number, since it is larger than the sum of its proper divisors (77466699).

120430005 is a wasteful number, since it uses less digits than its factorization.

120430005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217036.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 120430005 is about 10974.0605520473. The cubic root of 120430005 is about 493.8308700524.

Adding to 120430005 its reverse (500034021), we get a palindrome (620464026).

The spelling of 120430005 in words is "one hundred twenty million, four hundred thirty thousand, five".

Divisors: 1 3 5 15 37 111 185 555 216991 650973 1084955 3254865 8028667 24086001 40143335 120430005