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142112554 = 2176168521
BaseRepresentation
bin10000111100001…
…11011100101010
3100220102001202221
420132013130222
5242340100204
622033544254
73343636213
oct1036073452
9326361687
10142112554
11732452a1
123b71508a
1323599a8c
1414c3440a
15c722654
hex878772a

142112554 has 16 divisors (see below), whose sum is σ = 229411656. Its totient is φ = 65779200.

The previous prime is 142112543. The next prime is 142112567. The reversal of 142112554 is 455211241.

142112554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 134676025 + 7436529 = 11605^2 + 2727^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32187 + ... + 36334.

Almost surely, 2142112554 is an apocalyptic number.

142112554 is a deficient number, since it is larger than the sum of its proper divisors (87299102).

142112554 is a wasteful number, since it uses less digits than its factorization.

142112554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68601.

The product of its digits is 1600, while the sum is 25.

The square root of 142112554 is about 11921.0970132786. The cubic root of 142112554 is about 521.8481499758.

Adding to 142112554 its reverse (455211241), we get a palindrome (597323795).

The spelling of 142112554 in words is "one hundred forty-two million, one hundred twelve thousand, five hundred fifty-four".

Divisors: 1 2 17 34 61 122 1037 2074 68521 137042 1164857 2329714 4179781 8359562 71056277 142112554