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145120379 = 297170481
BaseRepresentation
bin10001010011001…
…01110001111011
3101010001212201212
420221211301323
5244122323004
622222233335
73411334325
oct1051456173
9333055655
10145120379
1174a0a0a8
124072584b
13240b0b61
14153b8615
15cb1896e
hex8a65c7b

145120379 has 8 divisors (see below), whose sum is σ = 152241120. Its totient is φ = 138140800.

The previous prime is 145120351. The next prime is 145120387. The reversal of 145120379 is 973021541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145120379 - 28 = 145120123 is a prime.

It is a super-2 number, since 2×1451203792 = 42119848802207282, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (145120979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33182 + ... + 37299.

It is an arithmetic number, because the mean of its divisors is an integer number (19030140).

Almost surely, 2145120379 is an apocalyptic number.

145120379 is a deficient number, since it is larger than the sum of its proper divisors (7120741).

145120379 is an equidigital number, since it uses as much as digits as its factorization.

145120379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70581.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 145120379 is about 12046.5920077008. The cubic root of 145120379 is about 525.5041313235.

The spelling of 145120379 in words is "one hundred forty-five million, one hundred twenty thousand, three hundred seventy-nine".

Divisors: 1 29 71 2059 70481 2043949 5004151 145120379