101424021 has 4 divisors (see below), whose sum is σ = 135232032. Its totient is φ = 67616012.

The previous prime is 101424013. The next prime is 101424031. The reversal of 101424021 is 120424101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101424021 - 2³ = 101424013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101424031) 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, 16904001 + ... + 16904006.

It is an arithmetic number, because the mean of its divisors is an integer number (33808008).

Almost surely, 2^101424021 is an apocalyptic number.

It is an amenable number.

101424021 is a deficient number, since it is larger than the sum of its proper divisors (33808011).

101424021 is an equidigital number, since it uses as much as digits as its factorization.

101424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33808010.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 101424021 is about 10070.9493594199. The cubic root of 101424021 is about 466.3517471119.

Adding to 101424021 its reverse (120424101), we get a palindrome (221848122).

The spelling of 101424021 in words is "one hundred one million, four hundred twenty-four thousand, twenty-one".