1220986342 has 16 divisors (see below), whose sum is σ = 1940034240. Its totient is φ = 574338688.

The previous prime is 1220986337. The next prime is 1220986343. The reversal of 1220986342 is 2436890221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220986343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93384 + ... + 105652.

It is an arithmetic number, because the mean of its divisors is an integer number (121252140).

Almost surely, 2^1220986342 is an apocalyptic number.

1220986342 is a deficient number, since it is larger than the sum of its proper divisors (719047898).

1220986342 is a wasteful number, since it uses less digits than its factorization.

1220986342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1220986342 is about 34942.6149851439. The cubic root of 1220986342 is about 1068.8176131683.

The spelling of 1220986342 in words is "one billion, two hundred twenty million, nine hundred eighty-six thousand, three hundred forty-two".