1421266427 has 16 divisors (see below), whose sum is σ = 1661824512. Its totient is φ = 1190394240.

The previous prime is 1421266403. The next prime is 1421266433. The reversal of 1421266427 is 7246621241.

It is a happy number.

It is not a de Polignac number, because 1421266427 - 2¹⁴ = 1421250043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421266447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43508 + ... + 68814.

It is an arithmetic number, because the mean of its divisors is an integer number (103864032).

Almost surely, 2^1421266427 is an apocalyptic number.

1421266427 is a deficient number, since it is larger than the sum of its proper divisors (240558085).

1421266427 is a wasteful number, since it uses less digits than its factorization.

1421266427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25498.

The product of its digits is 32256, while the sum is 35.

The square root of 1421266427 is about 37699.6873594464. The cubic root of 1421266427 is about 1124.3249090789.

Adding to 1421266427 its reverse (7246621241), we get a palindrome (8667887668).

The spelling of 1421266427 in words is "one billion, four hundred twenty-one million, two hundred sixty-six thousand, four hundred twenty-seven".