427336421 has 4 divisors (see below), whose sum is σ = 438886092. Its totient is φ = 415786752.

The previous prime is 427336417. The next prime is 427336423. The reversal of 427336421 is 124633724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 276390625 + 150945796 = 16625^2 + 12286^2 .

It is a cyclic number.

It is not a de Polignac number, because 427336421 - 2² = 427336417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427336423) 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, 5774780 + ... + 5774853.

It is an arithmetic number, because the mean of its divisors is an integer number (109721523).

Almost surely, 2^427336421 is an apocalyptic number.

It is an amenable number.

427336421 is a deficient number, since it is larger than the sum of its proper divisors (11549671).

427336421 is a wasteful number, since it uses less digits than its factorization.

427336421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549670.

The product of its digits is 24192, while the sum is 32.

The square root of 427336421 is about 20672.1169936705. The cubic root of 427336421 is about 753.2225315193. Note that the first 3 decimals are identical.

The spelling of 427336421 in words is "four hundred twenty-seven million, three hundred thirty-six thousand, four hundred twenty-one".