29421001 has 4 divisors (see below), whose sum is σ = 29527492. Its totient is φ = 29314512.

The previous prime is 29420983. The next prime is 29421017. The reversal of 29421001 is 10012492.

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 4928400 + 24492601 = 2220^2 + 4949^2 .

It is a cyclic number.

It is not a de Polignac number, because 29421001 - 2¹¹ = 29418953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29421001.

It is not an unprimeable number, because it can be changed into a prime (29424001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52830 + ... + 53383.

It is an arithmetic number, because the mean of its divisors is an integer number (7381873).

Almost surely, 2^29421001 is an apocalyptic number.

It is an amenable number.

29421001 is a deficient number, since it is larger than the sum of its proper divisors (106491).

29421001 is a wasteful number, since it uses less digits than its factorization.

29421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106490.

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

The square root of 29421001 is about 5424.1129228658. The cubic root of 29421001 is about 308.7112680137.

Adding to 29421001 its reverse (10012492), we get a palindrome (39433493).

The spelling of 29421001 in words is "twenty-nine million, four hundred twenty-one thousand, one".