123042043340 has 12 divisors (see below), whose sum is σ = 258388291056. Its totient is φ = 49216817328.

The previous prime is 123042043337. The next prime is 123042043381. The reversal of 123042043340 is 43340240321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076051064 + ... + 3076051103.

It is an arithmetic number, because the mean of its divisors is an integer number (21532357588).

Almost surely, 2^123042043340 is an apocalyptic number.

123042043340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123042043340 is an abundant number, since it is smaller than the sum of its proper divisors (135346247716).

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

123042043340 is a wasteful number, since it uses less digits than its factorization.

123042043340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152102176 (or 6152102174 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 123042043340 its reverse (43340240321), we get a palindrome (166382283661).

The spelling of 123042043340 in words is "one hundred twenty-three billion, forty-two million, forty-three thousand, three hundred forty".