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120131907 = 375720567
BaseRepresentation
bin1110010100100…
…01000101000011
322101001022222220
413022101011003
5221223210112
615530502123
72656050540
oct712210503
9271038886
10120131907
11618a1975
1234294943
131bb71c8c
1411d51bc7
15a82e98c
hex7291143

120131907 has 8 divisors (see below), whose sum is σ = 183058176. Its totient is φ = 68646792.

The previous prime is 120131897. The next prime is 120131917. The reversal of 120131907 is 709131021.

It is an interprime number because it is at equal distance from previous prime (120131897) and next prime (120131917).

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

It is a de Polignac number, because none of the positive numbers 2k-120131907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120131917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860263 + ... + 2860304.

It is an arithmetic number, because the mean of its divisors is an integer number (22882272).

Almost surely, 2120131907 is an apocalyptic number.

120131907 is a deficient number, since it is larger than the sum of its proper divisors (62926269).

120131907 is an equidigital number, since it uses as much as digits as its factorization.

120131907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5720577.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 120131907 is about 10960.4701997679. The cubic root of 120131907 is about 493.4230768174.

Adding to 120131907 its reverse (709131021), we get a palindrome (829262928).

The spelling of 120131907 in words is "one hundred twenty million, one hundred thirty-one thousand, nine hundred seven".

Divisors: 1 3 7 21 5720567 17161701 40043969 120131907