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123479 is a prime number
BaseRepresentation
bin11110001001010111
320021101022
4132021113
512422404
62351355
71022666
oct361127
9207338
10123479
1184854
125b55b
1344285
1432ddd
15268be
hex1e257

123479 has 2 divisors, whose sum is σ = 123480. Its totient is φ = 123478.

The previous prime is 123457. The next prime is 123491. The reversal of 123479 is 974321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123479 - 216 = 57943 is a prime.

It is the 30-th primeval number, because it sets a new record (402) in the number of distinct primes that is it possible to write using its digits.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61739 + 61740.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2123479 is an apocalyptic number.

123479 is a deficient number, since it is larger than the sum of its proper divisors (1).

123479 is an equidigital number, since it uses as much as digits as its factorization.

123479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 123479 is about 351.3957882502. The cubic root of 123479 is about 49.7963718372.

The spelling of 123479 in words is "one hundred twenty-three thousand, four hundred seventy-nine".