100421430302440 has 48 divisors (see below), whose sum is σ = 244665822069900. Its totient is φ = 37078681955328.

The previous prime is 100421430302437. The next prime is 100421430302497. The reversal of 100421430302440 is 44203034124001.

It can be written as a sum of positive squares in 6 ways, for example, as 21447957865636 + 78973472436804 = 4631194^2 + 8886702^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100421430302399 and 100421430302408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7427613825 + ... + 7427627344.

Almost surely, 2^{100421430302440} is an apocalyptic number.

100421430302440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100421430302440 is an abundant number, since it is smaller than the sum of its proper divisors (144244391767460).

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

100421430302440 is a wasteful number, since it uses less digits than its factorization.

100421430302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855241206 (or 14855241189 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 100421430302440 its reverse (44203034124001), we get a palindrome (144624464426441).

The spelling of 100421430302440 in words is "one hundred trillion, four hundred twenty-one billion, four hundred thirty million, three hundred two thousand, four hundred forty".