2421929 has 4 divisors (see below), whose sum is σ = 2443476. Its totient is φ = 2400384.

The previous prime is 2421919. The next prime is 2421931. The reversal of 2421929 is 9291242.

2421929 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.

It can be written as a sum of positive squares in 2 ways, for example, as 102400 + 2319529 = 320^2 + 1523^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421929 - 2⁸ = 2421673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10604 + ... + 10829.

It is an arithmetic number, because the mean of its divisors is an integer number (610869).

2^2421929 is an apocalyptic number.

It is an amenable number.

2421929 is a deficient number, since it is larger than the sum of its proper divisors (21547).

2421929 is a wasteful number, since it uses less digits than its factorization.

2421929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21546.

The product of its digits is 2592, while the sum is 29.

The square root of 2421929 is about 1556.2547991894. The cubic root of 2421929 is about 134.2931319600.

The spelling of 2421929 in words is "two million, four hundred twenty-one thousand, nine hundred twenty-nine".