421415530 has 64 divisors (see below), whose sum is σ = 807770880. Its totient is φ = 158054400.

The previous prime is 421415521. The next prime is 421415543. The reversal of 421415530 is 35514124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421415495 and 421415504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1997125 + ... + 1997335.

It is an arithmetic number, because the mean of its divisors is an integer number (12621420).

Almost surely, 2^421415530 is an apocalyptic number.

421415530 is a deficient number, since it is larger than the sum of its proper divisors (386355350).

421415530 is a wasteful number, since it uses less digits than its factorization.

421415530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 421415530 is about 20528.4078778652. The cubic root of 421415530 is about 749.7276225742.

Adding to 421415530 its reverse (35514124), we get a palindrome (456929654).

The spelling of 421415530 in words is "four hundred twenty-one million, four hundred fifteen thousand, five hundred thirty".