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253242 = 232111279
BaseRepresentation
bin111101110100111010
3110212101100
4331310322
531100432
65232230
72103213
oct756472
9425340
10253242
111632a0
12102676
138b362
146840a
155007c
hex3dd3a

253242 has 24 divisors (see below), whose sum is σ = 599040. Its totient is φ = 76680.

The previous prime is 253229. The next prime is 253243. The reversal of 253242 is 242352.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253242.

It is not an unprimeable number, because it can be changed into a prime (253243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (24960).

2253242 is an apocalyptic number.

253242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

253242 is an abundant number, since it is smaller than the sum of its proper divisors (345798).

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

253242 is a wasteful number, since it uses less digits than its factorization.

253242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1295 counting only the distinct ones).

The product of its digits is 480, while the sum is 18.

The square root of 253242 is about 503.2315570391. The cubic root of 253242 is about 63.2671947294.

Adding to 253242 its reverse (242352), we get a palindrome (495594).

The spelling of 253242 in words is "two hundred fifty-three thousand, two hundred forty-two".