427503421 has 2 divisors, whose sum is σ = 427503422. Its totient is φ = 427503420.

The previous prime is 427503409. The next prime is 427503449. The reversal of 427503421 is 124305724.

It is an a-pointer prime, because the next prime (427503449) can be obtained adding 427503421 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353026521 + 74476900 = 18789^2 + 8630^2 .

It is a cyclic number.

It is not a de Polignac number, because 427503421 - 2¹⁷ = 427372349 is a prime.

It is a pancake number, because a pancake can be divided into 427503421 parts by 29240 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 427503421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427503821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213751710 + 213751711.

It is an arithmetic number, because the mean of its divisors is an integer number (213751711).

Almost surely, 2^427503421 is an apocalyptic number.

It is an amenable number.

427503421 is a deficient number, since it is larger than the sum of its proper divisors (1).

427503421 is an equidigital number, since it uses as much as digits as its factorization.

427503421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 427503421 is about 20676.1558564449. The cubic root of 427503421 is about 753.3206367236.

The spelling of 427503421 in words is "four hundred twenty-seven million, five hundred three thousand, four hundred twenty-one".