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145127799 = 32137117703
BaseRepresentation
bin10001010011001…
…11100101110111
3101010002020220200
420221213211313
5244123042144
622222331543
73411365055
oct1051474567
9333066820
10145127799
1174a14733
1240729bb3
13240b434b
14153bb1d5
15cb1ac69
hex8a67977

145127799 has 12 divisors (see below), whose sum is σ = 211160976. Its totient is φ = 96044832.

The previous prime is 145127783. The next prime is 145127849. The reversal of 145127799 is 997721541.

It is not a de Polignac number, because 145127799 - 24 = 145127783 is a prime.

It is a super-4 number, since 4×1451277994 (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145127299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57619 + ... + 60084.

It is an arithmetic number, because the mean of its divisors is an integer number (17596748).

Almost surely, 2145127799 is an apocalyptic number.

145127799 is a deficient number, since it is larger than the sum of its proper divisors (66033177).

145127799 is a wasteful number, since it uses less digits than its factorization.

145127799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117846 (or 117843 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 145127799 is about 12046.8999746823. The cubic root of 145127799 is about 525.5130875070.

The spelling of 145127799 in words is "one hundred forty-five million, one hundred twenty-seven thousand, seven hundred ninety-nine".

Divisors: 1 3 9 137 411 1233 117703 353109 1059327 16125311 48375933 145127799