421432127 has 4 divisors (see below), whose sum is σ = 430398816. Its totient is φ = 412465440.

The previous prime is 421432111. The next prime is 421432129. The reversal of 421432127 is 721234124.

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 421432127 - 2⁴ = 421432111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421432096 and 421432105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421432129) 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 3 ways as a sum of consecutive naturals, for example, 4483274 + ... + 4483367.

It is an arithmetic number, because the mean of its divisors is an integer number (107599704).

Almost surely, 2^421432127 is an apocalyptic number.

421432127 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

421432127 is a deficient number, since it is larger than the sum of its proper divisors (8966689).

421432127 is an equidigital number, since it uses as much as digits as its factorization.

421432127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966688.

The product of its digits is 2688, while the sum is 26.

The square root of 421432127 is about 20528.8121185810. The cubic root of 421432127 is about 749.7374648519.

The spelling of 421432127 in words is "four hundred twenty-one million, four hundred thirty-two thousand, one hundred twenty-seven".