421140771 has 12 divisors (see below), whose sum is σ = 624755872. Its totient is φ = 273172176.

The previous prime is 421140749. The next prime is 421140773. The reversal of 421140771 is 177041124.

It is not a de Polignac number, because 421140771 - 2⁵ = 421140739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421140773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632011 + ... + 632676.

Almost surely, 2^421140771 is an apocalyptic number.

421140771 is a deficient number, since it is larger than the sum of its proper divisors (203615101).

421140771 is a wasteful number, since it uses less digits than its factorization.

421140771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264730 (or 1264727 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 421140771 is about 20521.7146213468. The cubic root of 421140771 is about 749.5646486745.

Adding to 421140771 its reverse (177041124), we get a palindrome (598181895).

The spelling of 421140771 in words is "four hundred twenty-one million, one hundred forty thousand, seven hundred seventy-one".