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142280259 = 311171271997
BaseRepresentation
bin10000111101100…
…00011001000011
3100220201120211020
420132300121003
5242410432014
622041320523
73345235152
oct1036603103
9326646736
10142280259
117334a2a0
123b796143
1323628204
1414c79599
15c7571a9
hex87b0643

142280259 has 32 divisors (see below), whose sum is σ = 220962816. Its totient is φ = 80478720.

The previous prime is 142280239. The next prime is 142280263. The reversal of 142280259 is 952082241.

It is not a de Polignac number, because 142280259 - 29 = 142279747 is a prime.

It is a super-2 number, since 2×1422802592 = 40487344202214162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142280239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70249 + ... + 72245.

It is an arithmetic number, because the mean of its divisors is an integer number (6905088).

Almost surely, 2142280259 is an apocalyptic number.

142280259 is a deficient number, since it is larger than the sum of its proper divisors (78682557).

142280259 is a wasteful number, since it uses less digits than its factorization.

142280259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 142280259 is about 11928.1288976939. The cubic root of 142280259 is about 522.0533444699.

The spelling of 142280259 in words is "one hundred forty-two million, two hundred eighty thousand, two hundred fifty-nine".

Divisors: 1 3 11 17 33 51 127 187 381 561 1397 1997 2159 4191 5991 6477 21967 23749 33949 65901 71247 101847 253619 373439 760857 1120317 2789809 4311523 8369427 12934569 47426753 142280259