23420130140 has 96 divisors (see below), whose sum is σ = 54233577216. Its totient is φ = 8424829440.

The previous prime is 23420130137. The next prime is 23420130143. The reversal of 23420130140 is 4103102432.

It is an interprime number because it is at equal distance from previous prime (23420130137) and next prime (23420130143).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420130143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8353979 + ... + 8356781.

It is an arithmetic number, because the mean of its divisors is an integer number (564933096).

Almost surely, 2^23420130140 is an apocalyptic number.

23420130140 is a gapful number since it is divisible by the number (20) 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 23420130140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27116788608).

23420130140 is an abundant number, since it is smaller than the sum of its proper divisors (30813447076).

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

23420130140 is a wasteful number, since it uses less digits than its factorization.

23420130140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219 (or 3217 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23420130140 its reverse (4103102432), we get a palindrome (27523232572).

The spelling of 23420130140 in words is "twenty-three billion, four hundred twenty million, one hundred thirty thousand, one hundred forty".