421421692 has 24 divisors (see below), whose sum is σ = 755954640. Its totient is φ = 205497600.

The previous prime is 421421681. The next prime is 421421699. The reversal of 421421692 is 296124124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421421699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19284 + ... + 34852.

It is an arithmetic number, because the mean of its divisors is an integer number (31498110).

Almost surely, 2^421421692 is an apocalyptic number.

It is an amenable number.

421421692 is a deficient number, since it is larger than the sum of its proper divisors (334532948).

421421692 is a wasteful number, since it uses less digits than its factorization.

421421692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741 (or 15739 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 421421692 is about 20528.5579620196. The cubic root of 421421692 is about 749.7312767656.

It can be divided in two parts, 42142 and 1692, that added together give a palindrome (43834).

The spelling of 421421692 in words is "four hundred twenty-one million, four hundred twenty-one thousand, six hundred ninety-two".