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123442023 = 341147341
BaseRepresentation
bin1110101101110…
…01001101100111
322121021111121210
413112321031213
5223100121043
620125442503
73026145165
oct726711547
9277244553
10123442023
1163752901
1235410433
131c760823
1412574235
15ac85633
hex75b9367

123442023 has 4 divisors (see below), whose sum is σ = 164589368. Its totient is φ = 82294680.

The previous prime is 123442013. The next prime is 123442043. The reversal of 123442023 is 320244321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123442023 - 26 = 123441959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123442013) by changing a digit.

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, 20573668 + ... + 20573673.

It is an arithmetic number, because the mean of its divisors is an integer number (41147342).

Almost surely, 2123442023 is an apocalyptic number.

123442023 is a deficient number, since it is larger than the sum of its proper divisors (41147345).

123442023 is an equidigital number, since it uses as much as digits as its factorization.

123442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41147344.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123442023 is about 11110.4465706829. The cubic root of 123442023 is about 497.9140066998.

Adding to 123442023 its reverse (320244321), we get a palindrome (443686344).

The spelling of 123442023 in words is "one hundred twenty-three million, four hundred forty-two thousand, twenty-three".

Divisors: 1 3 41147341 123442023