123035240 has 16 divisors (see below), whose sum is σ = 276829380. Its totient is φ = 49214080.

The previous prime is 123035233. The next prime is 123035327. The reversal of 123035240 is 42530321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115820644 + 7214596 = 10762^2 + 2686^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537901 + ... + 1537980.

Almost surely, 2^123035240 is an apocalyptic number.

123035240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123035240 is an abundant number, since it is smaller than the sum of its proper divisors (153794140).

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

123035240 is a wasteful number, since it uses less digits than its factorization.

123035240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075892 (or 3075888 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 123035240 is about 11092.1251345267. The cubic root of 123035240 is about 497.3664734286.

Adding to 123035240 its reverse (42530321), we get a palindrome (165565561).

The spelling of 123035240 in words is "one hundred twenty-three million, thirty-five thousand, two hundred forty".