1206421266 has 8 divisors (see below), whose sum is σ = 2412842544. Its totient is φ = 402140420.

The previous prime is 1206421261. The next prime is 1206421267. The reversal of 1206421266 is 6621246021.

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

1206421266 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1206421261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100535100 + ... + 100535111.

It is an arithmetic number, because the mean of its divisors is an integer number (301605318).

Almost surely, 2^1206421266 is an apocalyptic number.

1206421266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1206421266 is a wasteful number, since it uses less digits than its factorization.

1206421266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201070216.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1206421266 is about 34733.5754854003. The cubic root of 1206421266 is about 1064.5506464652.

Adding to 1206421266 its reverse (6621246021), we get a palindrome (7827667287).

The spelling of 1206421266 in words is "one billion, two hundred six million, four hundred twenty-one thousand, two hundred sixty-six".