427221375 has 32 divisors (see below), whose sum is σ = 812457984.
Its totient is φ = 195300000.
The previous prime is 427221371. The next prime is 427221391. The reversal of 427221375 is 573122724.
It is not a de Polignac number, because 427221375 - 22 = 427221371 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (427221371) 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 in 31 ways as a sum of consecutive naturals, for example, 78751 + ... + 84000.
It is an arithmetic number, because the mean of its divisors is an integer number (25389312).
Almost surely, 2427221375 is an apocalyptic number.
427221375 is a deficient number, since it is larger than the sum of its proper divisors (385236609).
427221375 is a wasteful number, since it uses less digits than its factorization.
427221375 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 162776 (or 162766 counting only the distinct ones).
The product of its digits is 23520, while the sum is 33.
The square root of 427221375 is about 20669.3341692470.
The cubic root of 427221375 is about 753.1549321506.
The spelling of 427221375 in words is "four hundred twenty-seven million, two hundred twenty-one thousand, three hundred seventy-five".