421042047 has 8 divisors (see below), whose sum is σ = 562025856. Its totient is φ = 280376472.

The previous prime is 421041977. The next prime is 421042049. The reversal of 421042047 is 740240124.

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

It is not a de Polignac number, because 421042047 - 2¹⁶ = 420976511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76453 + ... + 81774.

It is an arithmetic number, because the mean of its divisors is an integer number (70253232).

Almost surely, 2^421042047 is an apocalyptic number.

421042047 is a deficient number, since it is larger than the sum of its proper divisors (140983809).

421042047 is a wasteful number, since it uses less digits than its factorization.

421042047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159117.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 421042047 is about 20519.3091257966. The cubic root of 421042047 is about 749.5060730085.

The spelling of 421042047 in words is "four hundred twenty-one million, forty-two thousand, forty-seven".