123224220240 has 160 divisors (see below), whose sum is σ = 425588760576. Its totient is φ = 29236922880.

The previous prime is 123224220227. The next prime is 123224220307. The reversal of 123224220240 is 42022422321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 123224220240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372472 + ... + 620631.

Almost surely, 2^123224220240 is an apocalyptic number.

123224220240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123224220240 is an abundant number, since it is smaller than the sum of its proper divisors (302364540336).

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

123224220240 is a wasteful number, since it uses less digits than its factorization.

123224220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993177 (or 993171 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 123224220240 its reverse (42022422321), we get a palindrome (165246642561).

The spelling of 123224220240 in words is "one hundred twenty-three billion, two hundred twenty-four million, two hundred twenty thousand, two hundred forty".