123522240 has 56 divisors (see below), whose sum is σ = 392186160. Its totient is φ = 32939008.

The previous prime is 123522239. The next prime is 123522241. The reversal of 123522240 is 42225321.

It is an interprime number because it is at equal distance from previous prime (123522239) and next prime (123522241).

It is not an unprimeable number, because it can be changed into a prime (123522241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63375 + ... + 65294.

Almost surely, 2^123522240 is an apocalyptic number.

123522240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123522240 is an abundant number, since it is smaller than the sum of its proper divisors (268663920).

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

123522240 is a wasteful number, since it uses less digits than its factorization.

123522240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128689 (or 128679 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 123522240 is about 11114.0559653081. The cubic root of 123522240 is about 498.0218373999.

Adding to 123522240 its reverse (42225321), we get a palindrome (165747561).

The spelling of 123522240 in words is "one hundred twenty-three million, five hundred twenty-two thousand, two hundred forty".