2124421403 has 4 divisors (see below), whose sum is σ = 2287838448. Its totient is φ = 1961004360.

The previous prime is 2124421379. The next prime is 2124421417. The reversal of 2124421403 is 3041244212.

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

It is a cyclic number.

It is not a de Polignac number, because 2124421403 - 2⁶ = 2124421339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124421463) 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, 81708503 + ... + 81708528.

It is an arithmetic number, because the mean of its divisors is an integer number (571959612).

Almost surely, 2^2124421403 is an apocalyptic number.

2124421403 is a deficient number, since it is larger than the sum of its proper divisors (163417045).

2124421403 is a wasteful number, since it uses less digits than its factorization.

2124421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163417044.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2124421403 is about 46091.4460936083. The cubic root of 2124421403 is about 1285.5240995752.

Adding to 2124421403 its reverse (3041244212), we get a palindrome (5165665615).

The spelling of 2124421403 in words is "two billion, one hundred twenty-four million, four hundred twenty-one thousand, four hundred three".