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7940423141 = 71378279899
BaseRepresentation
bin1110110010100100…
…10011110111100101
3202111101022021210222
413121102103313211
5112230222020031
63351530454125
7400525324460
oct73122236745
922441267728
107940423141
113405186482
121657294345
139970b3941
145547da2d7
1531717ce7b
hex1d9493de5

7940423141 has 8 divisors (see below), whose sum is σ = 9141009600. Its totient is φ = 6756396768.

The previous prime is 7940423089. The next prime is 7940423203. The reversal of 7940423141 is 1413240497.

It is a happy number.

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 7940423141 - 214 = 7940406757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940420141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4138991 + ... + 4140908.

It is an arithmetic number, because the mean of its divisors is an integer number (1142626200).

Almost surely, 27940423141 is an apocalyptic number.

It is an amenable number.

7940423141 is a deficient number, since it is larger than the sum of its proper divisors (1200586459).

7940423141 is a wasteful number, since it uses less digits than its factorization.

7940423141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280043.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 7940423141 is about 89109.0519588218. The cubic root of 7940423141 is about 1995.0228861934.

The spelling of 7940423141 in words is "seven billion, nine hundred forty million, four hundred twenty-three thousand, one hundred forty-one".

Divisors: 1 7 137 959 8279899 57959293 1134346163 7940423141