1426463521 has 4 divisors (see below), whose sum is σ = 1630244032. Its totient is φ = 1222683012.

The previous prime is 1426463503. The next prime is 1426463531. The reversal of 1426463521 is 1253646241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1253646241 = 491 ⋅2553251.

It is a cyclic number.

It is not a de Polignac number, because 1426463521 - 2⁷ = 1426463393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426463531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101890245 + ... + 101890258.

It is an arithmetic number, because the mean of its divisors is an integer number (407561008).

Almost surely, 2^1426463521 is an apocalyptic number.

It is an amenable number.

1426463521 is a deficient number, since it is larger than the sum of its proper divisors (203780511).

1426463521 is an equidigital number, since it uses as much as digits as its factorization.

1426463521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203780510.

The product of its digits is 34560, while the sum is 34.

The square root of 1426463521 is about 37768.5520108992. The cubic root of 1426463521 is about 1125.6936682662.

The spelling of 1426463521 in words is "one billion, four hundred twenty-six million, four hundred sixty-three thousand, five hundred twenty-one".