101421043420 has 24 divisors (see below), whose sum is σ = 212996725200. Its totient is φ = 40566029952.

The previous prime is 101421043349. The next prime is 101421043457. The reversal of 101421043420 is 24340124101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101421043391 and 101421043400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221611 + ... + 501949.

It is an arithmetic number, because the mean of its divisors is an integer number (8874863550).

Almost surely, 2^101421043420 is an apocalyptic number.

101421043420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101421043420 is an abundant number, since it is smaller than the sum of its proper divisors (111575681780).

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

101421043420 is a wasteful number, since it uses less digits than its factorization.

101421043420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298437 (or 298435 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 101421043420 its reverse (24340124101), we get a palindrome (125761167521).

The spelling of 101421043420 in words is "one hundred one billion, four hundred twenty-one million, forty-three thousand, four hundred twenty".