123253530 has 16 divisors (see below), whose sum is σ = 295808544. Its totient is φ = 32867600.

The previous prime is 123253511. The next prime is 123253531. The reversal of 123253530 is 35352321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123253530.

It is not an unprimeable number, because it can be changed into a prime (123253531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054196 + ... + 2054255.

It is an arithmetic number, because the mean of its divisors is an integer number (18488034).

Almost surely, 2^123253530 is an apocalyptic number.

123253530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123253530 is an abundant number, since it is smaller than the sum of its proper divisors (172555014).

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

123253530 is a wasteful number, since it uses less digits than its factorization.

123253530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108461.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 123253530 is about 11101.9606376532. The cubic root of 123253530 is about 497.6604433569.

The spelling of 123253530 in words is "one hundred twenty-three million, two hundred fifty-three thousand, five hundred thirty".