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142041515 = 5711368939
BaseRepresentation
bin10000111011101…
…10000110101011
3100220021110022212
420131312012223
5242330312030
622032235335
73343222130
oct1035660653
9326243285
10142041515
11731a6990
123b69bb4b
1323573645
1414c16587
15c70b595
hex87761ab

142041515 has 16 divisors (see below), whose sum is σ = 212509440. Its totient is φ = 88545120.

The previous prime is 142041509. The next prime is 142041517. The reversal of 142041515 is 515140241.

It is not a de Polignac number, because 142041515 - 28 = 142041259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142041517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184085 + ... + 184854.

It is an arithmetic number, because the mean of its divisors is an integer number (13281840).

Almost surely, 2142041515 is an apocalyptic number.

142041515 is a deficient number, since it is larger than the sum of its proper divisors (70467925).

142041515 is a wasteful number, since it uses less digits than its factorization.

142041515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368962.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 142041515 is about 11918.1170912187. The cubic root of 142041515 is about 521.7611819388.

Adding to 142041515 its reverse (515140241), we get a palindrome (657181756).

The spelling of 142041515 in words is "one hundred forty-two million, forty-one thousand, five hundred fifteen".

Divisors: 1 5 7 11 35 55 77 385 368939 1844695 2582573 4058329 12912865 20291645 28408303 142041515