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120531412 = 22157191929
BaseRepresentation
bin1110010111100…
…10100111010100
322101210122000101
413023302213110
5221324001122
615543223444
72662333351
oct713624724
9271718011
10120531412
1162045041
1234447b84
131bc81a81
1412017628
15a8ad027
hex72f29d4

120531412 has 12 divisors (see below), whose sum is σ = 212274580. Its totient is φ = 59881536.

The previous prime is 120531403. The next prime is 120531413. The reversal of 120531412 is 214135021.

It can be written as a sum of positive squares in 2 ways, for example, as 80030916 + 40500496 = 8946^2 + 6364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 120531412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120531413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95337 + ... + 96592.

Almost surely, 2120531412 is an apocalyptic number.

It is an amenable number.

120531412 is a deficient number, since it is larger than the sum of its proper divisors (91743168).

120531412 is a wasteful number, since it uses less digits than its factorization.

120531412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192090 (or 192088 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120531412 is about 10978.6798842119. The cubic root of 120531412 is about 493.9694397766.

Adding to 120531412 its reverse (214135021), we get a palindrome (334666433).

The spelling of 120531412 in words is "one hundred twenty million, five hundred thirty-one thousand, four hundred twelve".

Divisors: 1 2 4 157 314 628 191929 383858 767716 30132853 60265706 120531412