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120144031 = 722451919
BaseRepresentation
bin1110010100101…
…00000010011111
322101001221121221
413022110002133
5221224102111
615531034211
72656131100
oct712240237
9271057557
10120144031
11618aaa97
123429b967
131bb77657
1411d563a7
15a833371
hex729409f

120144031 has 6 divisors (see below), whose sum is σ = 139759440. Its totient is φ = 102980556.

The previous prime is 120144023. The next prime is 120144047. The reversal of 120144031 is 130441021.

It is not a de Polignac number, because 120144031 - 23 = 120144023 is a prime.

It is a super-2 number, since 2×1201440312 = 28869176369857922, 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 = 120143996 and 120144014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120144131) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1225911 + ... + 1226008.

It is an arithmetic number, because the mean of its divisors is an integer number (23293240).

Almost surely, 2120144031 is an apocalyptic number.

120144031 is a deficient number, since it is larger than the sum of its proper divisors (19615409).

120144031 is an equidigital number, since it uses as much as digits as its factorization.

120144031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451933 (or 2451926 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 120144031 is about 10961.0232642760. The cubic root of 120144031 is about 493.4396754055.

Adding to 120144031 its reverse (130441021), we get a palindrome (250585052).

The spelling of 120144031 in words is "one hundred twenty million, one hundred forty-four thousand, thirty-one".

Divisors: 1 7 49 2451919 17163433 120144031