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130020123 = 346393607
BaseRepresentation
bin1111011111111…
…11001100011011
3100001122201002010
413233333030123
5231241120443
620522441003
73136103262
oct757771433
9301581063
10130020123
1167436052
1237663163
1320c249ac
14133a75d9
15b634733
hex7bff31b

130020123 has 8 divisors (see below), whose sum is σ = 173736448. Its totient is φ = 86491944.

The previous prime is 130020103. The next prime is 130020151. The reversal of 130020123 is 321020031.

It is a happy number.

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

It is not a de Polignac number, because 130020123 - 25 = 130020091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130020099 and 130020108.

It is not an unprimeable number, because it can be changed into a prime (130020103) 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, 45415 + ... + 48192.

It is an arithmetic number, because the mean of its divisors is an integer number (21717056).

Almost surely, 2130020123 is an apocalyptic number.

130020123 is a deficient number, since it is larger than the sum of its proper divisors (43716325).

130020123 is an equidigital number, since it uses as much as digits as its factorization.

130020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94073.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 130020123 is about 11402.6366687710. The cubic root of 130020123 is about 506.6058387752.

Adding to 130020123 its reverse (321020031), we get a palindrome (451040154).

The spelling of 130020123 in words is "one hundred thirty million, twenty thousand, one hundred twenty-three".

Divisors: 1 3 463 1389 93607 280821 43340041 130020123