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163015142 = 21710744809
BaseRepresentation
bin10011011011101…
…10100111100110
3102100202000201212
421231312213212
5313212441032
624101551422
74016414543
oct1155664746
9370660655
10163015142
1184021764
1246715572
1327a07c84
1417915bca
15e4a0bb2
hex9b769e6

163015142 has 16 divisors (see below), whose sum is σ = 261331920. Its totient is φ = 75994368.

The previous prime is 163015123. The next prime is 163015147. The reversal of 163015142 is 241510361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163015147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18767 + ... + 26042.

It is an arithmetic number, because the mean of its divisors is an integer number (16333245).

Almost surely, 2163015142 is an apocalyptic number.

163015142 is a deficient number, since it is larger than the sum of its proper divisors (98316778).

163015142 is a wasteful number, since it uses less digits than its factorization.

163015142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44935.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 163015142 is about 12767.7383275191. The cubic root of 163015142 is about 546.2724715362.

The spelling of 163015142 in words is "one hundred sixty-three million, fifteen thousand, one hundred forty-two".

Divisors: 1 2 17 34 107 214 1819 3638 44809 89618 761753 1523506 4794563 9589126 81507571 163015142