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120131432 = 2371211499
BaseRepresentation
bin1110010100100…
…00111101101000
322101001022100022
413022100331220
5221223201212
615530500012
72656046261
oct712207550
9271038308
10120131432
11618a1583
1234294608
131bb719b5
1411d51968
15a82e772
hex7290f68

120131432 has 16 divisors (see below), whose sum is σ = 228420000. Its totient is φ = 59219440.

The previous prime is 120131413. The next prime is 120131441. The reversal of 120131432 is 234131021.

It is a self number, because there is not a number n which added to its sum of digits gives 120131432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105182 + ... + 106317.

It is an arithmetic number, because the mean of its divisors is an integer number (14276250).

Almost surely, 2120131432 is an apocalyptic number.

It is an amenable number.

120131432 is a deficient number, since it is larger than the sum of its proper divisors (108288568).

120131432 is a wasteful number, since it uses less digits than its factorization.

120131432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211576 (or 211572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120131432 is about 10960.4485309681. The cubic root of 120131432 is about 493.4224264870.

Adding to 120131432 its reverse (234131021), we get a palindrome (354262453).

The spelling of 120131432 in words is "one hundred twenty million, one hundred thirty-one thousand, four hundred thirty-two".

Divisors: 1 2 4 8 71 142 284 568 211499 422998 845996 1691992 15016429 30032858 60065716 120131432