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142704212 = 22719313857
BaseRepresentation
bin10001000000101…
…11111001010100
3100221112010101012
420200113321110
5243013013322
622054351352
73351652160
oct1040277124
9327463335
10142704212
1173609872
123b95b558
1323746181
1414d49ca0
15c7dcae2
hex8817e54

142704212 has 48 divisors (see below), whose sum is σ = 301741440. Its totient is φ = 57687552.

The previous prime is 142704209. The next prime is 142704223. The reversal of 142704212 is 212407241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166088 + ... + 166944.

It is an arithmetic number, because the mean of its divisors is an integer number (6286280).

Almost surely, 2142704212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142704212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150870720).

142704212 is an abundant number, since it is smaller than the sum of its proper divisors (159037228).

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

142704212 is a wasteful number, since it uses less digits than its factorization.

142704212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 142704212 is about 11945.8868235054. The cubic root of 142704212 is about 522.5713517174.

The spelling of 142704212 in words is "one hundred forty-two million, seven hundred four thousand, two hundred twelve".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 313 532 626 857 1252 1714 2191 3428 4382 5947 5999 8764 11894 11998 16283 23788 23996 32566 41629 65132 83258 113981 166516 227962 268241 455924 536482 1072964 1877687 3755374 5096579 7510748 10193158 20386316 35676053 71352106 142704212