1244421206 has 16 divisors (see below), whose sum is σ = 2133747360. Its totient is φ = 533209920.

The previous prime is 1244421197. The next prime is 1244421221. The reversal of 1244421206 is 6021244421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117290 + ... + 127458.

It is an arithmetic number, because the mean of its divisors is an integer number (133359210).

Almost surely, 2^1244421206 is an apocalyptic number.

1244421206 is a deficient number, since it is larger than the sum of its proper divisors (889326154).

1244421206 is a wasteful number, since it uses less digits than its factorization.

1244421206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18919.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1244421206 is about 35276.3547719999. The cubic root of 1244421206 is about 1075.6124020273.

Adding to 1244421206 its reverse (6021244421), we get a palindrome (7265665627).

The spelling of 1244421206 in words is "one billion, two hundred forty-four million, four hundred twenty-one thousand, two hundred six".