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4120831 = 111328817
BaseRepresentation
bin1111101110000011111111
321202100201101
433232003333
52023331311
6224153531
750012041
oct17560377
97670641
104120831
112365050
1214688a7
13b13880
14793a91
15565ec1
hex3ee0ff

4120831 has 8 divisors (see below), whose sum is σ = 4841424. Its totient is φ = 3457920.

The previous prime is 4120829. The next prime is 4120847. The reversal of 4120831 is 1380214.

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 4120831 - 21 = 4120829 is a prime.

It is a super-2 number, since 2×41208312 = 33962496261122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4120799 and 4120808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120231) 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, 14266 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (605178).

Almost surely, 24120831 is an apocalyptic number.

4120831 is a deficient number, since it is larger than the sum of its proper divisors (720593).

4120831 is a wasteful number, since it uses less digits than its factorization.

4120831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28841.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 4120831 is about 2029.9830048550. The cubic root of 4120831 is about 160.3226691539.

The spelling of 4120831 in words is "four million, one hundred twenty thousand, eight hundred thirty-one".

Divisors: 1 11 13 143 28817 316987 374621 4120831