1206145106 has 4 divisors (see below), whose sum is σ = 1809217662. Its totient is φ = 603072552.

The previous prime is 1206145103. The next prime is 1206145111. The reversal of 1206145106 is 6015416021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 749938225 + 456206881 = 27385^2 + 21359^2 .

It is not an unprimeable number, because it can be changed into a prime (1206145103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301536275 + ... + 301536278.

Almost surely, 2^1206145106 is an apocalyptic number.

1206145106 is a deficient number, since it is larger than the sum of its proper divisors (603072556).

1206145106 is an equidigital number, since it uses as much as digits as its factorization.

1206145106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603072555.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1206145106 is about 34729.5998537271. The cubic root of 1206145106 is about 1064.4694120601.

The spelling of 1206145106 in words is "one billion, two hundred six million, one hundred forty-five thousand, one hundred six".