123402102444340 has 24 divisors (see below), whose sum is σ = 259420983385032. Its totient is φ = 49308161310720.

The previous prime is 123402102444337. The next prime is 123402102444371. The reversal of 123402102444340 is 43444201204321.

It can be written as a sum of positive squares in 4 ways, for example, as 13322178801936 + 110079923642404 = 3649956^2 + 10491898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123402102444296 and 123402102444305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3292459981 + ... + 3292497460.

It is an arithmetic number, because the mean of its divisors is an integer number (10809207641043).

Almost surely, 2^{123402102444340} is an apocalyptic number.

123402102444340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123402102444340 is an abundant number, since it is smaller than the sum of its proper divisors (136018880940692).

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

123402102444340 is a wasteful number, since it uses less digits than its factorization.

123402102444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6584958387 (or 6584958385 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 123402102444340 its reverse (43444201204321), we get a palindrome (166846303648661).

The spelling of 123402102444340 in words is "one hundred twenty-three trillion, four hundred two billion, one hundred two million, four hundred forty-four thousand, three hundred forty".