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42222429 = 324691381
BaseRepresentation
bin1010000100010…
…0001101011101
32221110010021200
42201010031131
541302104204
64104550113
71021612314
oct241041535
987403250
1042222429
1121919377
1212182339
1389942b2
14587127b
153a90539
hex284435d

42222429 has 6 divisors (see below), whose sum is σ = 60987966. Its totient is φ = 28148280.

The previous prime is 42222421. The next prime is 42222437. The reversal of 42222429 is 92422224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42222421) and next prime (42222437).

It can be written as a sum of positive squares in only one way, i.e., 23299929 + 18922500 = 4827^2 + 4350^2 .

It is not a de Polignac number, because 42222429 - 23 = 42222421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42222421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345682 + ... + 2345699.

It is an arithmetic number, because the mean of its divisors is an integer number (10164661).

Almost surely, 242222429 is an apocalyptic number.

It is an amenable number.

42222429 is a deficient number, since it is larger than the sum of its proper divisors (18765537).

42222429 is a wasteful number, since it uses less digits than its factorization.

42222429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691387 (or 4691384 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 42222429 is about 6497.8788077341. The cubic root of 42222429 is about 348.2152107183.

The spelling of 42222429 in words is "forty-two million, two hundred twenty-two thousand, four hundred twenty-nine".

Divisors: 1 3 9 4691381 14074143 42222429