2502420021 has 32 divisors (see below), whose sum is σ = 3750727680. Its totient is φ = 1648809648.

The previous prime is 2502419971. The next prime is 2502420029. The reversal of 2502420021 is 1200242052.

It is not a de Polignac number, because 2502420021 - 2⁶ = 2502419957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2502419976 and 2502420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502420029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1752910 + ... + 1754336.

It is an arithmetic number, because the mean of its divisors is an integer number (117210240).

Almost surely, 2^2502420021 is an apocalyptic number.

It is an amenable number.

2502420021 is a deficient number, since it is larger than the sum of its proper divisors (1248307659).

2502420021 is a wasteful number, since it uses less digits than its factorization.

2502420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2144 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2502420021 is about 50024.1943563312. The cubic root of 2502420021 is about 1357.6465969091.

Adding to 2502420021 its reverse (1200242052), we get a palindrome (3702662073).

The spelling of 2502420021 in words is "two billion, five hundred two million, four hundred twenty thousand, twenty-one".