10021429 has 4 divisors (see below), whose sum is σ = 10932480. Its totient is φ = 9110380.

The previous prime is 10021423. The next prime is 10021439. The reversal of 10021429 is 92412001.

10021429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10021429 - 2⁷ = 10021301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021423) 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, 455509 + ... + 455530.

It is an arithmetic number, because the mean of its divisors is an integer number (2733120).

Almost surely, 2^10021429 is an apocalyptic number.

It is an amenable number.

10021429 is a deficient number, since it is larger than the sum of its proper divisors (911051).

10021429 is an equidigital number, since it uses as much as digits as its factorization.

10021429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911050.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10021429 is about 3165.6640693542. The cubic root of 10021429 is about 215.5972504792.

The spelling of 10021429 in words is "ten million, twenty-one thousand, four hundred twenty-nine".