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451010142 = 2321111511979
BaseRepresentation
bin11010111000011…
…101111001011110
31011102122200121100
4122320131321132
51410424311032
6112430413530
714114344242
oct3270357136
91142580540
10451010142
11211646660
121070612a6
137259170b
1443c82422
15298dc97c
hex1ae1de5e

451010142 has 48 divisors (see below), whose sum is σ = 1067489280. Its totient is φ = 136482000.

The previous prime is 451010129. The next prime is 451010177. The reversal of 451010142 is 241010154.

451010142 is a `hidden beast` number, since 4 + 510 + 10 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226909 + ... + 228887.

It is an arithmetic number, because the mean of its divisors is an integer number (22239360).

Almost surely, 2451010142 is an apocalyptic number.

451010142 is an abundant number, since it is smaller than the sum of its proper divisors (616479138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451010142 is a wasteful number, since it uses less digits than its factorization.

451010142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149 (or 3146 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 451010142 is about 21236.9993643170. Note that the first 3 decimals coincide. The cubic root of 451010142 is about 766.8823974713.

Adding to 451010142 its reverse (241010154), we get a palindrome (692020296).

The spelling of 451010142 in words is "four hundred fifty-one million, ten thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 1151 1979 2302 3453 3958 5937 6906 10359 11874 12661 17811 20718 21769 25322 35622 37983 43538 65307 75966 113949 130614 195921 227898 391842 2277829 4555658 6833487 13666974 20500461 25056119 41000922 50112238 75168357 150336714 225505071 451010142