101424121 has 4 divisors (see below), whose sum is σ = 101457252. Its totient is φ = 101390992.

The previous prime is 101424101. The next prime is 101424137. The reversal of 101424121 is 121424101.

It is a happy number.

101424121 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91470096 + 9954025 = 9564^2 + 3155^2 .

It is a cyclic number.

It is not a de Polignac number, because 101424121 - 2¹⁹ = 100899833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101424095 and 101424104.

It is not an unprimeable number, because it can be changed into a prime (101424101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11446 + ... + 18271.

It is an arithmetic number, because the mean of its divisors is an integer number (25364313).

Almost surely, 2^101424121 is an apocalyptic number.

It is an amenable number.

101424121 is a deficient number, since it is larger than the sum of its proper divisors (33131).

101424121 is an equidigital number, since it uses as much as digits as its factorization.

101424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33130.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 101424121 is about 10070.9543241939. The cubic root of 101424121 is about 466.3519003799.

Adding to 101424121 its reverse (121424101), we get a palindrome (222848222).

The spelling of 101424121 in words is "one hundred one million, four hundred twenty-four thousand, one hundred twenty-one".