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123413 = 167739
BaseRepresentation
bin11110001000010101
320021021212
4132020111
512422123
62351205
71022543
oct361025
9207255
10123413
11847a4
125b505
1344234
1432d93
1526878
hex1e215

123413 has 4 divisors (see below), whose sum is σ = 124320. Its totient is φ = 122508.

The previous prime is 123407. The next prime is 123419. The reversal of 123413 is 314321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (123407) and next prime (123419).

It is a cyclic number.

It is not a de Polignac number, because 123413 - 24 = 123397 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 (123419) 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, 203 + ... + 536.

It is an arithmetic number, because the mean of its divisors is an integer number (31080).

2123413 is an apocalyptic number.

It is an amenable number.

123413 is a deficient number, since it is larger than the sum of its proper divisors (907).

123413 is an equidigital number, since it uses as much as digits as its factorization.

123413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 72, while the sum is 14.

The square root of 123413 is about 351.3018644983. The cubic root of 123413 is about 49.7874981386.

Adding to 123413 its reverse (314321), we get a palindrome (437734).

The spelling of 123413 in words is "one hundred twenty-three thousand, four hundred thirteen".

Divisors: 1 167 739 123413