427036421 has 6 divisors (see below), whose sum is σ = 496756710. Its totient is φ = 366031176.

The previous prime is 427036403. The next prime is 427036453. The reversal of 427036421 is 124630724.

It can be written as a sum of positive squares in only one way, i.e., 226502500 + 200533921 = 15050^2 + 14161^2 .

It is not a de Polignac number, because 427036421 - 2¹⁸ = 426774277 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 (427036471) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 4357466 + ... + 4357563.

It is an arithmetic number, because the mean of its divisors is an integer number (82792785).

Almost surely, 2^427036421 is an apocalyptic number.

It is an amenable number.

427036421 is a deficient number, since it is larger than the sum of its proper divisors (69720289).

427036421 is an equidigital number, since it uses as much as digits as its factorization.

427036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715043 (or 8715036 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 427036421 is about 20664.8595688429. The cubic root of 427036421 is about 753.0462304078.

The spelling of 427036421 in words is "four hundred twenty-seven million, thirty-six thousand, four hundred twenty-one".