415401021 has 32 divisors (see below), whose sum is σ = 706417920. Its totient is φ = 236328192.

The previous prime is 415401013. The next prime is 415401031. The reversal of 415401021 is 120104514.

It is not a de Polignac number, because 415401021 - 2³ = 415401013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 415400985 and 415401003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415401011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39321 + ... + 48753.

It is an arithmetic number, because the mean of its divisors is an integer number (22075560).

Almost surely, 2^415401021 is an apocalyptic number.

It is an amenable number.

415401021 is a deficient number, since it is larger than the sum of its proper divisors (291016899).

415401021 is a wasteful number, since it uses less digits than its factorization.

415401021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9682 (or 9676 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 415401021 is about 20381.3890841621. The cubic root of 415401021 is about 746.1437746833.

Adding to 415401021 its reverse (120104514), we get a palindrome (535505535).

The spelling of 415401021 in words is "four hundred fifteen million, four hundred one thousand, twenty-one".