123333520142 has 16 divisors (see below), whose sum is σ = 211539807360. Its totient is φ = 52829494008.

The previous prime is 123333520127. The next prime is 123333520159. The reversal of 123333520142 is 241025333321.

It is a happy number.

It is a super-2 number, since 2×123333520142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283092 + ... + 2336487.

It is an arithmetic number, because the mean of its divisors is an integer number (13221237960).

Almost surely, 2^123333520142 is an apocalyptic number.

123333520142 is a deficient number, since it is larger than the sum of its proper divisors (88206287218).

123333520142 is a wasteful number, since it uses less digits than its factorization.

123333520142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621495.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 123333520142 its reverse (241025333321), we get a palindrome (364358853463).

The spelling of 123333520142 in words is "one hundred twenty-three billion, three hundred thirty-three million, five hundred twenty thousand, one hundred forty-two".