1421403253 has 2 divisors, whose sum is σ = 1421403254. Its totient is φ = 1421403252.

The previous prime is 1421403241. The next prime is 1421403257. The reversal of 1421403253 is 3523041241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036968804 + 384434449 = 32202^2 + 19607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421403253 - 2¹³ = 1421395061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421403257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710701626 + 710701627.

It is an arithmetic number, because the mean of its divisors is an integer number (710701627).

Almost surely, 2^1421403253 is an apocalyptic number.

It is an amenable number.

1421403253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421403253 is an equidigital number, since it uses as much as digits as its factorization.

1421403253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1421403253 is about 37701.5019992573. The cubic root of 1421403253 is about 1124.3609876871.

Adding to 1421403253 its reverse (3523041241), we get a palindrome (4944444494).

The spelling of 1421403253 in words is "one billion, four hundred twenty-one million, four hundred three thousand, two hundred fifty-three".