123041240 has 64 divisors (see below), whose sum is σ = 335016000. Its totient is φ = 39702528.

The previous prime is 123041227. The next prime is 123041273. The reversal of 123041240 is 42140321.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 8165 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (5234625).

Almost surely, 2^123041240 is an apocalyptic number.

123041240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123041240 is an abundant number, since it is smaller than the sum of its proper divisors (211974760).

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

123041240 is a wasteful number, since it uses less digits than its factorization.

123041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884 (or 25880 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123041240 is about 11092.3955933784. The cubic root of 123041240 is about 497.3745582405.

Adding to 123041240 its reverse (42140321), we get a palindrome (165181561).

The spelling of 123041240 in words is "one hundred twenty-three million, forty-one thousand, two hundred forty".