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142488511 = 1122115581
BaseRepresentation
bin10000111111000…
…11001110111111
3100221010011111021
420133203032333
5242434113021
622050005011
73350063254
oct1037431677
9327104437
10142488511
1173481800
123b876767
132369bc39
1414cd142b
15c798c41
hex87e33bf

142488511 has 12 divisors (see below), whose sum is σ = 157390072. Its totient is φ = 128898000.

The previous prime is 142488503. The next prime is 142488527. The reversal of 142488511 is 115884241.

It is a happy number.

It is not a de Polignac number, because 142488511 - 23 = 142488503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142488211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22741 + ... + 28321.

Almost surely, 2142488511 is an apocalyptic number.

142488511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142488511 is a deficient number, since it is larger than the sum of its proper divisors (14901561).

142488511 is a wasteful number, since it uses less digits than its factorization.

142488511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5814 (or 5803 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 142488511 is about 11936.8551553581. The cubic root of 142488511 is about 522.3079257075.

The spelling of 142488511 in words is "one hundred forty-two million, four hundred eighty-eight thousand, five hundred eleven".

Divisors: 1 11 121 211 2321 5581 25531 61391 675301 1177591 12953501 142488511