123122052440 has 32 divisors (see below), whose sum is σ = 277056467280. Its totient is φ = 49243158912.

The previous prime is 123122052371. The next prime is 123122052461. The reversal of 123122052440 is 44250221321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184442 + ... + 529398.

Almost surely, 2^123122052440 is an apocalyptic number.

123122052440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122052440 is an abundant number, since it is smaller than the sum of its proper divisors (153934414840).

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

123122052440 is a wasteful number, since it uses less digits than its factorization.

123122052440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353891 (or 353887 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 123122052440 its reverse (44250221321), we get a palindrome (167372273761).

The spelling of 123122052440 in words is "one hundred twenty-three billion, one hundred twenty-two million, fifty-two thousand, four hundred forty".