1226666142 has 24 divisors (see below), whose sum is σ = 2862221544. Its totient is φ = 377435664.

The previous prime is 1226666131. The next prime is 1226666149. The reversal of 1226666142 is 2416666221.

It is a junction number, because it is equal to n+sod(n) for n = 1226666097 and 1226666106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226666149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2620848 + ... + 2621315.

It is an arithmetic number, because the mean of its divisors is an integer number (119259231).

Almost surely, 2^1226666142 is an apocalyptic number.

1226666142 is an abundant number, since it is smaller than the sum of its proper divisors (1635555402).

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

1226666142 is a wasteful number, since it uses less digits than its factorization.

1226666142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242184 (or 5242181 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1226666142 is about 35023.7939406912. The cubic root of 1226666142 is about 1070.4723631342.

The spelling of 1226666142 in words is "one billion, two hundred twenty-six million, six hundred sixty-six thousand, one hundred forty-two".