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142111684 = 221113248447
BaseRepresentation
bin10000111100001…
…11001111000100
3100220102000120201
420132013033010
5242340033214
622033540244
73343633531
oct1036071704
9326360521
10142111684
1173244680
123b714684
1323599570
1414c33d88
15c722274
hex87873c4

142111684 has 24 divisors (see below), whose sum is σ = 292174848. Its totient is φ = 59627040.

The previous prime is 142111637. The next prime is 142111727. The reversal of 142111684 is 486111241.

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 7 ways as a sum of consecutive naturals, for example, 123652 + ... + 124795.

It is an arithmetic number, because the mean of its divisors is an integer number (12173952).

Almost surely, 2142111684 is an apocalyptic number.

It is an amenable number.

142111684 is an abundant number, since it is smaller than the sum of its proper divisors (150063164).

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

142111684 is a wasteful number, since it uses less digits than its factorization.

142111684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248475 (or 248473 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 142111684 is about 11921.0605232924. The cubic root of 142111684 is about 521.8470850715.

The spelling of 142111684 in words is "one hundred forty-two million, one hundred eleven thousand, six hundred eighty-four".

Divisors: 1 2 4 11 13 22 26 44 52 143 286 572 248447 496894 993788 2732917 3229811 5465834 6459622 10931668 12919244 35527921 71055842 142111684