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142085715 = 3515162731
BaseRepresentation
bin10000111100000…
…00111001010011
3100220100200221220
420132000321103
5242333220330
622033220123
73343465032
oct1036007123
9326320856
10142085715
1173227112
123b701643
132358a7b5
1414c28719
15c719710
hex8780e53

142085715 has 16 divisors (see below), whose sum is σ = 228846336. Its totient is φ = 75276000.

The previous prime is 142085707. The next prime is 142085731. The reversal of 142085715 is 517580241.

It is not a de Polignac number, because 142085715 - 23 = 142085707 is a prime.

It is a super-2 number, since 2×1420857152 = 40376700814122450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29101 + ... + 33630.

It is an arithmetic number, because the mean of its divisors is an integer number (14302896).

Almost surely, 2142085715 is an apocalyptic number.

142085715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142085715 is a deficient number, since it is larger than the sum of its proper divisors (86760621).

142085715 is a wasteful number, since it uses less digits than its factorization.

142085715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62890.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 142085715 is about 11919.9712667439. The cubic root of 142085715 is about 521.8152962883.

The spelling of 142085715 in words is "one hundred forty-two million, eighty-five thousand, seven hundred fifteen".

Divisors: 1 3 5 15 151 453 755 2265 62731 188193 313655 940965 9472381 28417143 47361905 142085715