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142660216 = 2390719661
BaseRepresentation
bin10001000000011…
…01001001111000
3100221102220000201
420200031021320
5243010111331
622053411544
73351406666
oct1040151170
9327386021
10142660216
1173589806
123b939bb4
132372c13a
1414d37c36
15c7cea61
hex880d278

142660216 has 16 divisors (see below), whose sum is σ = 267796440. Its totient is φ = 71247840.

The previous prime is 142660213. The next prime is 142660261. The reversal of 142660216 is 612066241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142660213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575 + ... + 17086.

Almost surely, 2142660216 is an apocalyptic number.

It is an amenable number.

142660216 is a deficient number, since it is larger than the sum of its proper divisors (125136224).

142660216 is a wasteful number, since it uses less digits than its factorization.

142660216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20574 (or 20570 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 142660216 is about 11944.0452108990. The cubic root of 142660216 is about 522.5176429258.

The spelling of 142660216 in words is "one hundred forty-two million, six hundred sixty thousand, two hundred sixteen".

Divisors: 1 2 4 8 907 1814 3628 7256 19661 39322 78644 157288 17832527 35665054 71330108 142660216