101420421989 has 8 divisors (see below), whose sum is σ = 103981667328. Its totient is φ = 98863347040.

The previous prime is 101420421961. The next prime is 101420421997. The reversal of 101420421989 is 989124024101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101420421989 - 2⁸ = 101420421733 is a prime.

It is a super-2 number, since 2×101420421989² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101420421919) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 993317 + ... + 1090650.

It is an arithmetic number, because the mean of its divisors is an integer number (12997708416).

Almost surely, 2^101420421989 is an apocalyptic number.

It is an amenable number.

101420421989 is a deficient number, since it is larger than the sum of its proper divisors (2561245339).

101420421989 is a wasteful number, since it uses less digits than its factorization.

101420421989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085195.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 101420421989 in words is "one hundred one billion, four hundred twenty million, four hundred twenty-one thousand, nine hundred eighty-nine".