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142510442 = 2239443673
BaseRepresentation
bin10000111111010…
…00100101101010
3100221011021120112
420133220211222
5242440313232
622050254322
73350214224
oct1037504552
9327137515
10142510442
1173497228
123b8873a2
13236a8c09
1414cd9414
15c7a04b2
hex87e896a

142510442 has 16 divisors (see below), whose sum is σ = 215464320. Its totient is φ = 70691712.

The previous prime is 142510427. The next prime is 142510447. The reversal of 142510442 is 244015241.

142510442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142510447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211418 + ... + 212090.

It is an arithmetic number, because the mean of its divisors is an integer number (13466520).

Almost surely, 2142510442 is an apocalyptic number.

142510442 is a deficient number, since it is larger than the sum of its proper divisors (72953878).

142510442 is a wasteful number, since it uses less digits than its factorization.

142510442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 142510442 is about 11937.7737455524. The cubic root of 142510442 is about 522.3347211953.

Adding to 142510442 its reverse (244015241), we get a palindrome (386525683).

The spelling of 142510442 in words is "one hundred forty-two million, five hundred ten thousand, four hundred forty-two".

Divisors: 1 2 239 443 478 673 886 1346 105877 160847 211754 298139 321694 596278 71255221 142510442