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2142893257 is a prime number
BaseRepresentation
bin111111110111001…
…1111010011001001
312112100020020220221
41333232133103021
513342040041012
6552345350041
7104050202131
oct17756372311
95470206827
102142893257
119aa67546a
124b9798321
13281c5859b
14164853ac1
15c81db507
hex7fb9f4c9

2142893257 has 2 divisors, whose sum is σ = 2142893258. Its totient is φ = 2142893256.

The previous prime is 2142893237. The next prime is 2142893281. The reversal of 2142893257 is 7523982412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1613709241 + 529184016 = 40171^2 + 23004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2142893257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142893237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071446628 + 1071446629.

It is an arithmetic number, because the mean of its divisors is an integer number (1071446629).

Almost surely, 22142893257 is an apocalyptic number.

It is an amenable number.

2142893257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142893257 is an equidigital number, since it uses as much as digits as its factorization.

2142893257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 2142893257 is about 46291.3950643097. The cubic root of 2142893257 is about 1289.2392319388.

The spelling of 2142893257 in words is "two billion, one hundred forty-two million, eight hundred ninety-three thousand, two hundred fifty-seven".