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422421 = 31391013
BaseRepresentation
bin1100111001000010101
3210110110020
41213020111
5102004141
613015353
73406356
oct1471025
9713406
10422421
1126940a
12184559
1311a36c
14add2d
1585266
hex67215

422421 has 8 divisors (see below), whose sum is σ = 567840. Its totient is φ = 279312.

The previous prime is 422407. The next prime is 422431. The reversal of 422421 is 124224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422421 - 210 = 421397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 923.

It is an arithmetic number, because the mean of its divisors is an integer number (70980).

2422421 is an apocalyptic number.

It is an amenable number.

422421 is a deficient number, since it is larger than the sum of its proper divisors (145419).

422421 is a wasteful number, since it uses less digits than its factorization.

422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its digits is 128, while the sum is 15.

The square root of 422421 is about 649.9392279283. The cubic root of 422421 is about 75.0323416072.

Adding to 422421 its reverse (124224), we get a palindrome (546645).

The spelling of 422421 in words is "four hundred twenty-two thousand, four hundred twenty-one", and thus it is an iban number.

Divisors: 1 3 139 417 1013 3039 140807 422421