421403413 has 4 divisors (see below), whose sum is σ = 443582560. Its totient is φ = 399224268.

The previous prime is 421403357. The next prime is 421403417. The reversal of 421403413 is 314304124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421403413 - 2⁹ = 421402901 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 11089545 + ... + 11089582.

It is an arithmetic number, because the mean of its divisors is an integer number (110895640).

Almost surely, 2^421403413 is an apocalyptic number.

It is an amenable number.

421403413 is a deficient number, since it is larger than the sum of its proper divisors (22179147).

421403413 is a wasteful number, since it uses less digits than its factorization.

421403413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22179146.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 421403413 is about 20528.1127481315. The cubic root of 421403413 is about 749.7204368426.

Adding to 421403413 its reverse (314304124), we get a palindrome (735707537).

The spelling of 421403413 in words is "four hundred twenty-one million, four hundred three thousand, four hundred thirteen".