123547 has 2 divisors, whose sum is σ = 123548. Its totient is φ = 123546.

The previous prime is 123527. The next prime is 123551. The reversal of 123547 is 745321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123547 - 2⁷ = 123419 is a prime.

It is a super-2 number, since 2×123547² = 30527722418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61773 + 61774.

It is an arithmetic number, because the mean of its divisors is an integer number (61774).

2¹²³⁵⁴⁷ is an apocalyptic number.

123547 is a deficient number, since it is larger than the sum of its proper divisors (1).

123547 is an equidigital number, since it uses as much as digits as its factorization.

123547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 22.

The square root of 123547 is about 351.4925319264. The cubic root of 123547 is about 49.8055111291.

Adding to 123547 its reverse (745321), we get a palindrome (868868).

The spelling of 123547 in words is "one hundred twenty-three thousand, five hundred forty-seven".