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442123133 = 22712891511
BaseRepresentation
bin11010010110100…
…100001101111101
31010210221011220212
4122112210031331
51401140420013
6111512122205
713645661504
oct3226441575
91123834825
10442123133
11207626721
12104096365
137079c62a
1442a0b83b
1528c346a8
hex1a5a437d

442123133 has 8 divisors (see below), whose sum is σ = 444709440. Its totient is φ = 439542880.

The previous prime is 442123127. The next prime is 442123139. The reversal of 442123133 is 331321244.

It is an interprime number because it is at equal distance from previous prime (442123127) and next prime (442123139).

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

It is a cyclic number.

It is not a de Polignac number, because 442123133 - 26 = 442123069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442123099 and 442123108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442123139) 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, 291848 + ... + 293358.

It is an arithmetic number, because the mean of its divisors is an integer number (55588680).

Almost surely, 2442123133 is an apocalyptic number.

It is an amenable number.

442123133 is a deficient number, since it is larger than the sum of its proper divisors (2586307).

442123133 is a wasteful number, since it uses less digits than its factorization.

442123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027.

The product of its digits is 1728, while the sum is 23.

The square root of 442123133 is about 21026.7242574777. The cubic root of 442123133 is about 761.8118893936.

Adding to 442123133 its reverse (331321244), we get a palindrome (773444377).

The spelling of 442123133 in words is "four hundred forty-two million, one hundred twenty-three thousand, one hundred thirty-three".