Search a number
-
+
123141844 = 2274397923
BaseRepresentation
bin1110101011011…
…11111011010100
322120201020212001
413111233323110
5223011014334
620115205044
73023455060
oct725577324
9276636761
10123141844
1163568321
12352a6784
131c686cc7
14124d6aa0
15ac26714
hex756fed4

123141844 has 12 divisors (see below), whose sum is σ = 246283744. Its totient is φ = 52775064.

The previous prime is 123141841. The next prime is 123141853. The reversal of 123141844 is 448141321.

123141844 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 4397923 = 123141844 / (1 + 2 + 3 + 1 + 4 + 1 + 8 + 4 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123141841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198934 + ... + 2198989.

Almost surely, 2123141844 is an apocalyptic number.

123141844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123141844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123141844 is a wasteful number, since it uses less digits than its factorization.

123141844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397934 (or 4397932 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 123141844 is about 11096.9294852225. The cubic root of 123141844 is about 497.5100798443.

The spelling of 123141844 in words is "one hundred twenty-three million, one hundred forty-one thousand, eight hundred forty-four".

Divisors: 1 2 4 7 14 28 4397923 8795846 17591692 30785461 61570922 123141844