415211421 has 4 divisors (see below), whose sum is σ = 553615232. Its totient is φ = 276807612.

The previous prime is 415211399. The next prime is 415211431. The reversal of 415211421 is 124112514.

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 not a de Polignac number, because 415211421 - 2²¹ = 413114269 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 (415211431) 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, 69201901 + ... + 69201906.

It is an arithmetic number, because the mean of its divisors is an integer number (138403808).

Almost surely, 2^415211421 is an apocalyptic number.

It is an amenable number.

415211421 is a deficient number, since it is larger than the sum of its proper divisors (138403811).

415211421 is a wasteful number, since it uses less digits than its factorization.

415211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138403810.

The product of its digits is 320, while the sum is 21.

The square root of 415211421 is about 20376.7372510910. The cubic root of 415211421 is about 746.0302374977.

Adding to 415211421 its reverse (124112514), we get a palindrome (539323935).

The spelling of 415211421 in words is "four hundred fifteen million, two hundred eleven thousand, four hundred twenty-one".