123270 has 32 divisors (see below), whose sum is σ = 338688. Its totient is φ = 28128.

The previous prime is 123269. The next prime is 123289. The reversal of 123270 is 72321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (10584).

2¹²³²⁷⁰ is an apocalyptic number.

123270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123270 is an abundant number, since it is smaller than the sum of its proper divisors (215418).

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

123270 is a wasteful number, since it uses less digits than its factorization.

123270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 123270 is about 351.0982768400. The cubic root of 123270 is about 49.7682609328.

Adding to 123270 its reverse (72321), we get a palindrome (195591).

It can be divided in two parts, 123 and 270, that added together give a palindrome (393).

The spelling of 123270 in words is "one hundred twenty-three thousand, two hundred seventy", and thus it is an iban number.