2421021242 has 4 divisors (see below), whose sum is σ = 3631531866. Its totient is φ = 1210510620.

The previous prime is 2421021227. The next prime is 2421021299. The reversal of 2421021242 is 2421201242.

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., 2223028201 + 197993041 = 47149^2 + 14071^2 .

It is a super-2 number, since 2×2421021242² = 11722687708430445128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605255309 + ... + 605255312.

Almost surely, 2^2421021242 is an apocalyptic number.

2421021242 is a deficient number, since it is larger than the sum of its proper divisors (1210510624).

2421021242 is a wasteful number, since it uses less digits than its factorization.

2421021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210510623.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2421021242 is about 49203.8742580297. The cubic root of 2421021242 is about 1342.7635182339.

Adding to 2421021242 its reverse (2421201242), we get a palindrome (4842222484).

The spelling of 2421021242 in words is "two billion, four hundred twenty-one million, twenty-one thousand, two hundred forty-two".