2453420421 has 10 divisors (see below), whose sum is σ = 3664986182. Its totient is φ = 1635613560.

The previous prime is 2453420413. The next prime is 2453420471. The reversal of 2453420421 is 1240243542.

2453420421 is a `hidden beast` number, since 2 + 453 + 4 + 204 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2144153025 + 309267396 = 46305^2 + 17586^2 .

It is not a de Polignac number, because 2453420421 - 2³ = 2453420413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2453420471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15144490 + ... + 15144651.

Almost surely, 2^2453420421 is an apocalyptic number.

It is an amenable number.

2453420421 is a deficient number, since it is larger than the sum of its proper divisors (1211565761).

2453420421 is an equidigital number, since it uses as much as digits as its factorization.

2453420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30289153 (or 30289144 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2453420421 is about 49532.0141019927. The cubic root of 2453420421 is about 1348.7268144505.

Adding to 2453420421 its reverse (1240243542), we get a palindrome (3693663963).

The spelling of 2453420421 in words is "two billion, four hundred fifty-three million, four hundred twenty thousand, four hundred twenty-one".