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235142132 = 22531109161
BaseRepresentation
bin11100000001111…
…11101111110100
3121101110110100212
432000333233310
5440144022012
635155524552
75553450401
oct1600775764
9541413325
10235142132
11110805845
12668b9758
133993c974
142332d2a8
151599bb22
hexe03fbf4

235142132 has 12 divisors (see below), whose sum is σ = 419263236. Its totient is φ = 115352640.

The previous prime is 235142123. The next prime is 235142143. The reversal of 235142132 is 231241532.

It can be written as a sum of positive squares in 2 ways, for example, as 134420836 + 100721296 = 11594^2 + 10036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 235142098 and 235142107.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 554369 + ... + 554792.

It is an arithmetic number, because the mean of its divisors is an integer number (34938603).

Almost surely, 2235142132 is an apocalyptic number.

It is an amenable number.

235142132 is a deficient number, since it is larger than the sum of its proper divisors (184121104).

235142132 is a wasteful number, since it uses less digits than its factorization.

235142132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109218 (or 1109216 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 235142132 is about 15334.3448506938. The cubic root of 235142132 is about 617.2249651822.

Adding to 235142132 its reverse (231241532), we get a palindrome (466383664).

The spelling of 235142132 in words is "two hundred thirty-five million, one hundred forty-two thousand, one hundred thirty-two".

Divisors: 1 2 4 53 106 212 1109161 2218322 4436644 58785533 117571066 235142132