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151201243 = 1977431033
BaseRepresentation
bin10010000001100…
…10010111011011
3101112111211010001
421000302113123
5302201414433
623000433431
73514121644
oct1100622733
9345454101
10151201243
1178392806
1242778877
132542c8bb
141611c6cb
15d41a57d
hex90325db

151201243 has 8 divisors (see below), whose sum is σ = 152320608. Its totient is φ = 150085824.

The previous prime is 151201217. The next prime is 151201279. The reversal of 151201243 is 342102151.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-151201243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151201243.

It is not an unprimeable number, because it can be changed into a prime (151201543) 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 7 ways as a sum of consecutive naturals, for example, 145855 + ... + 146887.

It is an arithmetic number, because the mean of its divisors is an integer number (19040076).

Almost surely, 2151201243 is an apocalyptic number.

151201243 is a deficient number, since it is larger than the sum of its proper divisors (1119365).

151201243 is a wasteful number, since it uses less digits than its factorization.

151201243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

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

The square root of 151201243 is about 12296.3914625389. The cubic root of 151201243 is about 532.7438609155.

Adding to 151201243 its reverse (342102151), we get a palindrome (493303394).

The spelling of 151201243 in words is "one hundred fifty-one million, two hundred one thousand, two hundred forty-three".

Divisors: 1 197 743 1033 146371 203501 767519 151201243