2421252403 has 4 divisors (see below), whose sum is σ = 2548686760. Its totient is φ = 2293818048.

The previous prime is 2421252401. The next prime is 2421252413. The reversal of 2421252403 is 3042521242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3042521242 = 2 ⋅1521260621.

It is a cyclic number.

It is not a de Polignac number, because 2421252403 - 2¹ = 2421252401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421252401) 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, 63717150 + ... + 63717187.

It is an arithmetic number, because the mean of its divisors is an integer number (637171690).

Almost surely, 2^2421252403 is an apocalyptic number.

2421252403 is a deficient number, since it is larger than the sum of its proper divisors (127434357).

2421252403 is a wasteful number, since it uses less digits than its factorization.

2421252403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127434356.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2421252403 is about 49206.2232141423. The cubic root of 2421252403 is about 1342.8062529104.

Adding to 2421252403 its reverse (3042521242), we get a palindrome (5463773645).

The spelling of 2421252403 in words is "two billion, four hundred twenty-one million, two hundred fifty-two thousand, four hundred three".