101423440420 has 12 divisors (see below), whose sum is σ = 212989224924. Its totient is φ = 40569376160.

The previous prime is 101423440399. The next prime is 101423440439. The reversal of 101423440420 is 24044324101.

It can be written as a sum of positive squares in 2 ways, for example, as 63447564544 + 37975875876 = 251888^2 + 194874^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535585991 + ... + 2535586030.

It is an arithmetic number, because the mean of its divisors is an integer number (17749102077).

Almost surely, 2^101423440420 is an apocalyptic number.

101423440420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101423440420 is an abundant number, since it is smaller than the sum of its proper divisors (111565784504).

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

101423440420 is a wasteful number, since it uses less digits than its factorization.

101423440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071172030 (or 5071172028 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 101423440420 its reverse (24044324101), we get a palindrome (125467764521).

The spelling of 101423440420 in words is "one hundred one billion, four hundred twenty-three million, four hundred forty thousand, four hundred twenty".