421107047 has 4 divisors (see below), whose sum is σ = 421180200. Its totient is φ = 421033896.

The previous prime is 421106969. The next prime is 421107083. The reversal of 421107047 is 740701124.

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

It is a cyclic number.

It is not a de Polignac number, because 421107047 - 2²⁸ = 152671591 is a prime.

It is a super-2 number, since 2×421107047² = 354662290066120418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421103047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27128 + ... + 39725.

It is an arithmetic number, because the mean of its divisors is an integer number (105295050).

Almost surely, 2^421107047 is an apocalyptic number.

421107047 is a deficient number, since it is larger than the sum of its proper divisors (73153).

421107047 is an equidigital number, since it uses as much as digits as its factorization.

421107047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73152.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 421107047 is about 20520.8929386613. The cubic root of 421107047 is about 749.5446403268.

The spelling of 421107047 in words is "four hundred twenty-one million, one hundred seven thousand, forty-seven".