415254421 has 4 divisors (see below), whose sum is σ = 416163532. Its totient is φ = 414345312.

The previous prime is 415254419. The next prime is 415254473. The reversal of 415254421 is 124452514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158004900 + 257249521 = 12570^2 + 16039^2 .

It is a cyclic number.

It is not a de Polignac number, because 415254421 - 2¹ = 415254419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 415254421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415257421) 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, 453870 + ... + 454783.

It is an arithmetic number, because the mean of its divisors is an integer number (104040883).

Almost surely, 2^415254421 is an apocalyptic number.

It is an amenable number.

415254421 is a deficient number, since it is larger than the sum of its proper divisors (909111).

415254421 is an equidigital number, since it uses as much as digits as its factorization.

415254421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909110.

The product of its digits is 6400, while the sum is 28.

The square root of 415254421 is about 20377.7923485347. The cubic root of 415254421 is about 746.0559899949.

The spelling of 415254421 in words is "four hundred fifteen million, two hundred fifty-four thousand, four hundred twenty-one".