1123423002340 has 96 divisors (see below), whose sum is σ = 2513723756544. Its totient is φ = 420270028800.

The previous prime is 1123423002329. The next prime is 1123423002367. The reversal of 1123423002340 is 432003243211.

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 31 ways as a sum of consecutive naturals, for example, 150046077 + ... + 150053563.

It is an arithmetic number, because the mean of its divisors is an integer number (26184622464).

Almost surely, 2^{1123423002340} is an apocalyptic number.

1123423002340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123423002340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1256861878272).

1123423002340 is an abundant number, since it is smaller than the sum of its proper divisors (1390300754204).

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

1123423002340 is a wasteful number, since it uses less digits than its factorization.

1123423002340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237 (or 10235 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1123423002340 its reverse (432003243211), we get a palindrome (1555426245551).

The spelling of 1123423002340 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, two thousand, three hundred forty".