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120002431 = 2318012897
BaseRepresentation
bin1110010011100…
…01011101111111
322100210202101111
413021301131333
5221210034211
615524022451
72655001213
oct711613577
9270722344
10120002431
116181366a
1234231a27
131bb28073
1411d1a943
15a806421
hex727177f

120002431 has 8 divisors (see below), whose sum is σ = 125332704. Its totient is φ = 114681600.

The previous prime is 120002413. The next prime is 120002459. The reversal of 120002431 is 134200021.

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

It is a cyclic number.

It is not a de Polignac number, because 120002431 - 213 = 119994239 is a prime.

It is a super-2 number, since 2×1200024312 = 28801166891819522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002131) 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, 39975 + ... + 42871.

It is an arithmetic number, because the mean of its divisors is an integer number (15666588).

Almost surely, 2120002431 is an apocalyptic number.

120002431 is a deficient number, since it is larger than the sum of its proper divisors (5330273).

120002431 is a wasteful number, since it uses less digits than its factorization.

120002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120002431 is about 10954.5621090028. The cubic root of 120002431 is about 493.2457456000.

Adding to 120002431 its reverse (134200021), we get a palindrome (254202452).

The spelling of 120002431 in words is "one hundred twenty million, two thousand, four hundred thirty-one".

Divisors: 1 23 1801 2897 41423 66631 5217497 120002431