123342150540 has 384 divisors, whose sum is σ = 429063505920. Its totient is φ = 25835470848.

The previous prime is 123342150509. The next prime is 123342150551. The reversal of 123342150540 is 45051243321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123342150498 and 123342150507.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42574372 + ... + 42577268.

It is an arithmetic number, because the mean of its divisors is an integer number (1117352880).

Almost surely, 2^123342150540 is an apocalyptic number.

123342150540 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 123342150540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214531752960).

123342150540 is an abundant number, since it is smaller than the sum of its proper divisors (305721355380).

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

123342150540 is a wasteful number, since it uses less digits than its factorization.

123342150540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 123342150540 its reverse (45051243321), we get a palindrome (168393393861).

The spelling of 123342150540 in words is "one hundred twenty-three billion, three hundred forty-two million, one hundred fifty thousand, five hundred forty".