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389042 = 2194521
BaseRepresentation
bin1011110111110110010
3201202122222
41132332302
544422132
612201042
73210143
oct1367662
9652588
10389042
11246325
12169182
13108104
14a1aca
157a412
hex5efb2

389042 has 4 divisors (see below), whose sum is σ = 583566. Its totient is φ = 194520.

The previous prime is 389041. The next prime is 389047. The reversal of 389042 is 240983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240983 = 1371759.

It can be written as a sum of positive squares in only one way, i.e., 326041 + 63001 = 571^2 + 251^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389042.

It is not an unprimeable number, because it can be changed into a prime (389041) by changing a digit.

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 as a sum of consecutive naturals, namely, 97259 + ... + 97262.

2389042 is an apocalyptic number.

389042 is a deficient number, since it is larger than the sum of its proper divisors (194524).

389042 is a wasteful number, since it uses less digits than its factorization.

389042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194523.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 389042 is about 623.7323143785. The cubic root of 389042 is about 73.0015637371.

The spelling of 389042 in words is "three hundred eighty-nine thousand, forty-two".

Divisors: 1 2 194521 389042