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142519 = 1319577
BaseRepresentation
bin100010110010110111
321020111111
4202302313
514030034
63015451
71132336
oct426267
9236444
10142519
1198093
126a587
134cb40
1439d1d
152c364
hex22cb7

142519 has 8 divisors (see below), whose sum is σ = 161840. Its totient is φ = 124416.

The previous prime is 142501. The next prime is 142529. The reversal of 142519 is 915241.

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

It is a 9-Lehmer number, since φ(142519) divides (142519-1)9.

It is a cyclic number.

It is not a de Polignac number, because 142519 - 27 = 142391 is a prime.

It is a super-2 number, since 2×1425192 = 40623330722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142529) 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, 42 + ... + 535.

It is an arithmetic number, because the mean of its divisors is an integer number (20230).

2142519 is an apocalyptic number.

142519 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142519 is a deficient number, since it is larger than the sum of its proper divisors (19321).

142519 is a wasteful number, since it uses less digits than its factorization.

142519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its digits is 360, while the sum is 22.

The square root of 142519 is about 377.5168870395. The cubic root of 142519 is about 52.2345176689.

It can be divided in two parts, 1425 and 19, that added together give a square (1444 = 382).

The spelling of 142519 in words is "one hundred forty-two thousand, five hundred nineteen".

Divisors: 1 13 19 247 577 7501 10963 142519