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2142153223 = 7478963901
BaseRepresentation
bin111111110101110…
…1010101000000111
312112021211122210021
41333223222220013
513341342400343
6552321440011
7104041000450
oct17753525007
95467748707
102142153223
119aa20a471
124b94a0007
13281a597b2
14164700127
15c80e20ed
hex7faeaa07

2142153223 has 8 divisors (see below), whose sum is σ = 2448724640. Its totient is φ = 1835719200.

The previous prime is 2142153197. The next prime is 2142153241. The reversal of 2142153223 is 3223512412.

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

It is not a de Polignac number, because 2142153223 - 25 = 2142153191 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 (2142153823) 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, 1573 + ... + 65473.

It is an arithmetic number, because the mean of its divisors is an integer number (306090580).

Almost surely, 22142153223 is an apocalyptic number.

2142153223 is a deficient number, since it is larger than the sum of its proper divisors (306571417).

2142153223 is an equidigital number, since it uses as much as digits as its factorization.

2142153223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68697.

The product of its digits is 2880, while the sum is 25.

The square root of 2142153223 is about 46283.4011606753. The cubic root of 2142153223 is about 1289.0908047734.

Adding to 2142153223 its reverse (3223512412), we get a palindrome (5365665635).

The spelling of 2142153223 in words is "two billion, one hundred forty-two million, one hundred fifty-three thousand, two hundred twenty-three".

Divisors: 1 7 4789 33523 63901 447307 306021889 2142153223