2420921251 has 8 divisors (see below), whose sum is σ = 2808062720. Its totient is φ = 2044103688.

The previous prime is 2420921231. The next prime is 2420921263. The reversal of 2420921251 is 1521290242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2420921251 - 2¹¹ = 2420919203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420921201) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2580471 + ... + 2581408.

It is an arithmetic number, because the mean of its divisors is an integer number (351007840).

Almost surely, 2^2420921251 is an apocalyptic number.

2420921251 is a deficient number, since it is larger than the sum of its proper divisors (387141469).

2420921251 is an equidigital number, since it uses as much as digits as its factorization.

2420921251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161953.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2420921251 is about 49202.8581588509. The cubic root of 2420921251 is about 1342.7450320797.

The spelling of 2420921251 in words is "two billion, four hundred twenty million, nine hundred twenty-one thousand, two hundred fifty-one".