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312042 = 23131397
BaseRepresentation
bin1001100001011101010
3120212001010
41030023222
534441132
610404350
72436513
oct1141352
9525033
10312042
111a3495
121306b6
13ac053
1481a0a
15626cc
hex4c2ea

312042 has 16 divisors (see below), whose sum is σ = 630432. Its totient is φ = 102960.

The previous prime is 312031. The next prime is 312043. The reversal of 312042 is 240213.

It is not an unprimeable number, because it can be changed into a prime (312043) by changing a digit.

312042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (39402).

2312042 is an apocalyptic number.

312042 is an abundant number, since it is smaller than the sum of its proper divisors (318390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312042 is a wasteful number, since it uses less digits than its factorization.

312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 312042 is about 558.6071965165. The cubic root of 312042 is about 67.8272721186.

Adding to 312042 its reverse (240213), we get a palindrome (552255).

The spelling of 312042 in words is "three hundred twelve thousand, forty-two", and thus it is an iban number.

Divisors: 1 2 3 6 131 262 393 397 786 794 1191 2382 52007 104014 156021 312042