2421542434 has 4 divisors (see below), whose sum is σ = 3632313654. Its totient is φ = 1210771216.

The previous prime is 2421542411. The next prime is 2421542479. The reversal of 2421542434 is 4342451242.

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

It can be written as a sum of positive squares in only one way, i.e., 1274704209 + 1146838225 = 35703^2 + 33865^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2421542396 and 2421542405.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 605385607 + ... + 605385610.

Almost surely, 2^2421542434 is an apocalyptic number.

2421542434 is a deficient number, since it is larger than the sum of its proper divisors (1210771220).

2421542434 is a wasteful number, since it uses less digits than its factorization.

2421542434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210771219.

The product of its digits is 30720, while the sum is 31.

The square root of 2421542434 is about 49209.1702226323. The cubic root of 2421542434 is about 1342.8598670222.

Adding to 2421542434 its reverse (4342451242), we get a palindrome (6763993676).

The spelling of 2421542434 in words is "two billion, four hundred twenty-one million, five hundred forty-two thousand, four hundred thirty-four".