1421310266 has 4 divisors (see below), whose sum is σ = 2131965402. Its totient is φ = 710655132.

The previous prime is 1421310229. The next prime is 1421310311. The reversal of 1421310266 is 6620131241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6620131241 = 109 ⋅60735149.

It can be written as a sum of positive squares in only one way, i.e., 1381683241 + 39627025 = 37171^2 + 6295^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355327565 + ... + 355327568.

Almost surely, 2^1421310266 is an apocalyptic number.

1421310266 is a deficient number, since it is larger than the sum of its proper divisors (710655136).

1421310266 is an equidigital number, since it uses as much as digits as its factorization.

1421310266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710655135.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1421310266 is about 37700.2687788827. The cubic root of 1421310266 is about 1124.3364689038.

The spelling of 1421310266 in words is "one billion, four hundred twenty-one million, three hundred ten thousand, two hundred sixty-six".