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69885142 = 247972949
BaseRepresentation
bin1000010101001…
…01110011010110
311212111112101121
410022211303112
5120342311032
610533514154
71506004525
oct412456326
9155445347
1069885142
11364a2818
121b4a295a
131162b472
1493d24bc
156206a97
hex42a5cd6

69885142 has 8 divisors (see below), whose sum is σ = 105048000. Its totient is φ = 34869144.

The previous prime is 69885139. The next prime is 69885223. The reversal of 69885142 is 24158896.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35517 + ... + 37432.

It is an arithmetic number, because the mean of its divisors is an integer number (13131000).

Almost surely, 269885142 is an apocalyptic number.

69885142 is a deficient number, since it is larger than the sum of its proper divisors (35162858).

69885142 is a wasteful number, since it uses less digits than its factorization.

69885142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73430.

The product of its digits is 138240, while the sum is 43.

The square root of 69885142 is about 8359.7333689538. The cubic root of 69885142 is about 411.9029958258.

The spelling of 69885142 in words is "sixty-nine million, eight hundred eighty-five thousand, one hundred forty-two".

Divisors: 1 2 479 958 72949 145898 34942571 69885142