103420401021 has 24 divisors (see below), whose sum is σ = 178230171840. Its totient is φ = 59097371256.

The previous prime is 103420400971. The next prime is 103420401041. The reversal of 103420401021 is 120104024301.

103420401021 is a `hidden beast` number, since 103 + 420 + 40 + 102 + 1 = 666.

It is not a de Polignac number, because 103420401021 - 2⁹ = 103420400509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103420400985 and 103420401003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103420401041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39084241 + ... + 39086886.

It is an arithmetic number, because the mean of its divisors is an integer number (7426257160).

Almost surely, 2^103420401021 is an apocalyptic number.

It is an amenable number.

103420401021 is a deficient number, since it is larger than the sum of its proper divisors (74809770819).

103420401021 is an equidigital number, since it uses as much as digits as its factorization.

103420401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78171150 (or 78171137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 103420401021 its reverse (120104024301), we get a palindrome (223524425322).

The spelling of 103420401021 in words is "one hundred three billion, four hundred twenty million, four hundred one thousand, twenty-one".