123333520340 has 12 divisors (see below), whose sum is σ = 259000392756. Its totient is φ = 49333408128.

The previous prime is 123333520339. The next prime is 123333520351. The reversal of 123333520340 is 43025333321.

It can be written as a sum of positive squares in 2 ways, for example, as 23459823556 + 99873696784 = 153166^2 + 316028^2 .

It is a super-2 number, since 2×123333520340² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 3083337989 + ... + 3083338028.

It is an arithmetic number, because the mean of its divisors is an integer number (21583366063).

Almost surely, 2^123333520340 is an apocalyptic number.

123333520340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123333520340 is an abundant number, since it is smaller than the sum of its proper divisors (135666872416).

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

123333520340 is a wasteful number, since it uses less digits than its factorization.

123333520340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166676026 (or 6166676024 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 29.

Adding to 123333520340 its reverse (43025333321), we get a palindrome (166358853661).

The spelling of 123333520340 in words is "one hundred twenty-three billion, three hundred thirty-three million, five hundred twenty thousand, three hundred forty".