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2105421037 is a prime number
BaseRepresentation
bin111110101111110…
…0010110011101101
312102201201110200221
41331133202303231
513302441433122
6544530251341
7103113532516
oct17537426355
95381643627
102105421037
11990500a95
124a9126b51
13277268485
1415d89ba0d
15c4c886c7
hex7d7e2ced

2105421037 has 2 divisors, whose sum is σ = 2105421038. Its totient is φ = 2105421036.

The previous prime is 2105421023. The next prime is 2105421047. The reversal of 2105421037 is 7301245012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1168204041 + 937216996 = 34179^2 + 30614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2105421037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105421047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052710518 + 1052710519.

It is an arithmetic number, because the mean of its divisors is an integer number (1052710519).

Almost surely, 22105421037 is an apocalyptic number.

It is an amenable number.

2105421037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105421037 is an equidigital number, since it uses as much as digits as its factorization.

2105421037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2105421037 is about 45884.8671895212. The cubic root of 2105421037 is about 1281.6801335689.

Adding to 2105421037 its reverse (7301245012), we get a palindrome (9406666049).

The spelling of 2105421037 in words is "two billion, one hundred five million, four hundred twenty-one thousand, thirty-seven".