1222686742 has 4 divisors (see below), whose sum is σ = 1834030116. Its totient is φ = 611343370.

The previous prime is 1222686721. The next prime is 1222686743. The reversal of 1222686742 is 2476862221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1222686695 and 1222686704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222686743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305671684 + ... + 305671687.

It is an arithmetic number, because the mean of its divisors is an integer number (458507529).

Almost surely, 2^1222686742 is an apocalyptic number.

1222686742 is a deficient number, since it is larger than the sum of its proper divisors (611343374).

1222686742 is an equidigital number, since it uses as much as digits as its factorization.

1222686742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611343373.

The product of its digits is 129024, while the sum is 40.

The square root of 1222686742 is about 34966.9378413381. The cubic root of 1222686742 is about 1069.3135440363.

The spelling of 1222686742 in words is "one billion, two hundred twenty-two million, six hundred eighty-six thousand, seven hundred forty-two".