123240041430 has 128 divisors (see below), whose sum is σ = 343011801600. Its totient is φ = 28023552000.

The previous prime is 123240041423. The next prime is 123240041437. The reversal of 123240041430 is 34140042321.

It is an interprime number because it is at equal distance from previous prime (123240041423) and next prime (123240041437).

It is a self number, because there is not a number n which added to its sum of digits gives 123240041430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123240041437) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535966 + ... + 730574.

It is an arithmetic number, because the mean of its divisors is an integer number (2679779700).

Almost surely, 2^123240041430 is an apocalyptic number.

123240041430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123240041430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171505900800).

123240041430 is an abundant number, since it is smaller than the sum of its proper divisors (219771760170).

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

123240041430 is a wasteful number, since it uses less digits than its factorization.

123240041430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194750.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123240041430 its reverse (34140042321), we get a palindrome (157380083751).

The spelling of 123240041430 in words is "one hundred twenty-three billion, two hundred forty million, forty-one thousand, four hundred thirty".