415420521 has 8 divisors (see below), whose sum is σ = 556954944. Its totient is φ = 275416560.

The previous prime is 415420513. The next prime is 415420529. The reversal of 415420521 is 125024514.

It is an interprime number because it is at equal distance from previous prime (415420513) and next prime (415420529).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 415420521 - 2³ = 415420513 is a prime.

It is a super-2 number, since 2×415420521² = 345148418535822882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 415420491 and 415420500.

It is not an unprimeable number, because it can be changed into a prime (415420529) 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, 381981 + ... + 383066.

It is an arithmetic number, because the mean of its divisors is an integer number (69619368).

Almost surely, 2^415420521 is an apocalyptic number.

It is an amenable number.

415420521 is a deficient number, since it is larger than the sum of its proper divisors (141534423).

415420521 is a wasteful number, since it uses less digits than its factorization.

415420521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765231.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 415420521 is about 20381.8674561484. The cubic root of 415420521 is about 746.1554498078.

The spelling of 415420521 in words is "four hundred fifteen million, four hundred twenty thousand, five hundred twenty-one".