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142115351 = 722079199
BaseRepresentation
bin10000111100010…
…00001000010111
3100220102012121112
420132020020113
5242340142401
622034005235
73343650320
oct1036101027
9326365545
10142115351
1173247404
123b71681b
132359b131
1414c35447
15c7233bb
hex8788217

142115351 has 8 divisors (see below), whose sum is σ = 162508800. Its totient is φ = 121744728.

The previous prime is 142115333. The next prime is 142115353. The reversal of 142115351 is 153511241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-142115351 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 (142115353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10850 + ... + 20048.

It is an arithmetic number, because the mean of its divisors is an integer number (20313600).

Almost surely, 2142115351 is an apocalyptic number.

142115351 is a deficient number, since it is larger than the sum of its proper divisors (20393449).

142115351 is an equidigital number, since it uses as much as digits as its factorization.

142115351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11413.

The product of its digits is 600, while the sum is 23.

The square root of 142115351 is about 11921.2143257304. The cubic root of 142115351 is about 521.8515735525.

Adding to 142115351 its reverse (153511241), we get a palindrome (295626592).

The spelling of 142115351 in words is "one hundred forty-two million, one hundred fifteen thousand, three hundred fifty-one".

Divisors: 1 7 2207 9199 15449 64393 20302193 142115351