421403414 has 16 divisors (see below), whose sum is σ = 637026768. Its totient is φ = 209068032.

The previous prime is 421403357. The next prime is 421403417. The reversal of 421403414 is 414304124.

It is a happy number.

It is a super-3 number, since 3×421403414³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421403414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421403417) 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, 144014 + ... + 146910.

It is an arithmetic number, because the mean of its divisors is an integer number (39814173).

Almost surely, 2^421403414 is an apocalyptic number.

421403414 is a deficient number, since it is larger than the sum of its proper divisors (215623354).

421403414 is a wasteful number, since it uses less digits than its factorization.

421403414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 421403414 is about 20528.1127724884. The cubic root of 421403414 is about 749.7204374356.

Adding to 421403414 its reverse (414304124), we get a palindrome (835707538).

It can be divided in two parts, 42140 and 3414, that added together give a palindrome (45554).

The spelling of 421403414 in words is "four hundred twenty-one million, four hundred three thousand, four hundred fourteen".