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142515212 = 2275089829
BaseRepresentation
bin10000111111010…
…01110000001100
3100221011112010012
420133221300030
5242440441322
622050332352
73350234150
oct1037516014
9327145105
10142515212
117349a874
123b88a0b8
13236ab138
1414cdb060
15c7a1ae2
hex87e9c0c

142515212 has 12 divisors (see below), whose sum is σ = 285030480. Its totient is φ = 61077936.

The previous prime is 142515203. The next prime is 142515227. The reversal of 142515212 is 212515241.

142515212 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2544887 + ... + 2544942.

It is an arithmetic number, because the mean of its divisors is an integer number (23752540).

Almost surely, 2142515212 is an apocalyptic number.

It is an amenable number.

142515212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142515212 is a wasteful number, since it uses less digits than its factorization.

142515212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089840 (or 5089838 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 142515212 is about 11937.9735298752. The cubic root of 142515212 is about 522.3405488591.

The spelling of 142515212 in words is "one hundred forty-two million, five hundred fifteen thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 5089829 10179658 20359316 35628803 71257606 142515212