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1020041111 = 5059201629
BaseRepresentation
bin111100110011001…
…001011110010111
32122002101110100102
4330303021132113
54042112303421
6245115004315
734164130535
oct7463113627
92562343312
101020041111
11483871a91
1224573969b
1313343622b
1499687155
155e83e60b
hex3ccc9797

1020041111 has 4 divisors (see below), whose sum is σ = 1020247800. Its totient is φ = 1019834424.

The previous prime is 1020041101. The next prime is 1020041119. The reversal of 1020041111 is 1111400201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111400201 = 1318483971.

It is a cyclic number.

It is not a de Polignac number, because 1020041111 - 218 = 1019778967 is a prime.

It is a super-2 number, since 2×10200411112 = 2080967736260228642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020041092 and 1020041101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020041119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95756 + ... + 105873.

It is an arithmetic number, because the mean of its divisors is an integer number (255061950).

Almost surely, 21020041111 is an apocalyptic number.

1020041111 is a deficient number, since it is larger than the sum of its proper divisors (206689).

1020041111 is an equidigital number, since it uses as much as digits as its factorization.

1020041111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206688.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1020041111 is about 31938.0824565283. The cubic root of 1020041111 is about 1006.6362333216.

Adding to 1020041111 its reverse (1111400201), we get a palindrome (2131441312).

The spelling of 1020041111 in words is "one billion, twenty million, forty-one thousand, one hundred eleven".

Divisors: 1 5059 201629 1020041111