1220626342 has 16 divisors (see below), whose sum is σ = 1973331360. Its totient is φ = 562923072.

The previous prime is 1220626313. The next prime is 1220626439. The reversal of 1220626342 is 2436260221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220626342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16498 + ... + 52090.

It is an arithmetic number, because the mean of its divisors is an integer number (123333210).

Almost surely, 2^1220626342 is an apocalyptic number.

1220626342 is a deficient number, since it is larger than the sum of its proper divisors (752705018).

1220626342 is a wasteful number, since it uses less digits than its factorization.

1220626342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36927.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1220626342 is about 34937.4633023063. The cubic root of 1220626342 is about 1068.7125581676.

Adding to 1220626342 its reverse (2436260221), we get a palindrome (3656886563).

The spelling of 1220626342 in words is "one billion, two hundred twenty million, six hundred twenty-six thousand, three hundred forty-two".