421048538 has 4 divisors (see below), whose sum is σ = 631572810. Its totient is φ = 210524268.

The previous prime is 421048517. The next prime is 421048547. The reversal of 421048538 is 835840124.

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

It can be written as a sum of positive squares in only one way, i.e., 418079809 + 2968729 = 20447^2 + 1723^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421048498 and 421048507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105262133 + ... + 105262136.

Almost surely, 2^421048538 is an apocalyptic number.

421048538 is a deficient number, since it is larger than the sum of its proper divisors (210524272).

421048538 is a wasteful number, since it uses less digits than its factorization.

421048538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210524271.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 421048538 is about 20519.4672932803. The cubic root of 421048538 is about 749.5099245786.

The spelling of 421048538 in words is "four hundred twenty-one million, forty-eight thousand, five hundred thirty-eight".