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2142100030 = 257123124859
BaseRepresentation
bin111111110101101…
…1101101000111110
312112021201221211011
41333223131220332
513341334200110
6552320345434
7104040356410
oct17753355076
95467657734
102142100030
119aa183504
124b947527a
13281a3b515
141646c89b0
15c80d148a
hex7fadda3e

2142100030 has 32 divisors (see below), whose sum is σ = 4410362880. Its totient is φ = 733808160.

The previous prime is 2142100027. The next prime is 2142100039. The reversal of 2142100030 is 300012412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142100039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73741 + ... + 98599.

It is an arithmetic number, because the mean of its divisors is an integer number (137823840).

Almost surely, 22142100030 is an apocalyptic number.

2142100030 is an abundant number, since it is smaller than the sum of its proper divisors (2268262850).

2142100030 is a wasteful number, since it uses less digits than its factorization.

2142100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26104.

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

The square root of 2142100030 is about 46282.8265126494. The cubic root of 2142100030 is about 1289.0801346412.

Adding to 2142100030 its reverse (300012412), we get a palindrome (2442112442).

The spelling of 2142100030 in words is "two billion, one hundred forty-two million, one hundred thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 1231 2462 6155 8617 12310 17234 24859 43085 49718 86170 124295 174013 248590 348026 870065 1740130 30601429 61202858 153007145 214210003 306014290 428420006 1071050015 2142100030