421425404 has 6 divisors (see below), whose sum is σ = 737494464. Its totient is φ = 210712700.

The previous prime is 421425401. The next prime is 421425409. The reversal of 421425404 is 404524124.

It is a super-2 number, since 2×421425404² = 355198742273126432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421425401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52678172 + ... + 52678179.

It is an arithmetic number, because the mean of its divisors is an integer number (122915744).

Almost surely, 2^421425404 is an apocalyptic number.

It is an amenable number.

421425404 is a deficient number, since it is larger than the sum of its proper divisors (316069060).

421425404 is a wasteful number, since it uses less digits than its factorization.

421425404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105356355 (or 105356353 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 421425404 is about 20528.6483724575. The cubic root of 421425404 is about 749.7334780400.

Adding to 421425404 its reverse (404524124), we get a palindrome (825949528).

The spelling of 421425404 in words is "four hundred twenty-one million, four hundred twenty-five thousand, four hundred four".