421245053 has 2 divisors, whose sum is σ = 421245054. Its totient is φ = 421245052.

The previous prime is 421244969. The next prime is 421245061. The reversal of 421245053 is 350542124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375506884 + 45738169 = 19378^2 + 6763^2 .

It is a cyclic number.

It is not a de Polignac number, because 421245053 - 2¹⁰ = 421244029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421245553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210622526 + 210622527.

It is an arithmetic number, because the mean of its divisors is an integer number (210622527).

Almost surely, 2^421245053 is an apocalyptic number.

It is an amenable number.

421245053 is a deficient number, since it is larger than the sum of its proper divisors (1).

421245053 is an equidigital number, since it uses as much as digits as its factorization.

421245053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 421245053 is about 20524.2552361834. The cubic root of 421245053 is about 749.6265121140.

Adding to 421245053 its reverse (350542124), we get a palindrome (771787177).

The spelling of 421245053 in words is "four hundred twenty-one million, two hundred forty-five thousand, fifty-three".