123535240 has 16 divisors (see below), whose sum is σ = 277954380. Its totient is φ = 49414080.

The previous prime is 123535219. The next prime is 123535241. The reversal of 123535240 is 42535321.

It can be written as a sum of positive squares in 2 ways, for example, as 120956004 + 2579236 = 10998^2 + 1606^2 .

It is not an unprimeable number, because it can be changed into a prime (123535241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544151 + ... + 1544230.

Almost surely, 2^123535240 is an apocalyptic number.

123535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123535240 is an abundant number, since it is smaller than the sum of its proper divisors (154419140).

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

123535240 is a wasteful number, since it uses less digits than its factorization.

123535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088392 (or 3088388 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 123535240 is about 11114.6407949155. The cubic root of 123535240 is about 498.0393080912.

The spelling of 123535240 in words is "one hundred twenty-three million, five hundred thirty-five thousand, two hundred forty".