1220140353 has 8 divisors (see below), whose sum is σ = 1627430400. Its totient is φ = 813138608.

The previous prime is 1220140349. The next prime is 1220140381. The reversal of 1220140353 is 3530410221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220140353 - 2² = 1220140349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220140553) 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, 61998 + ... + 79271.

It is an arithmetic number, because the mean of its divisors is an integer number (203428800).

Almost surely, 2^1220140353 is an apocalyptic number.

It is an amenable number.

1220140353 is a deficient number, since it is larger than the sum of its proper divisors (407290047).

1220140353 is a wasteful number, since it uses less digits than its factorization.

1220140353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144151.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1220140353 is about 34930.5074827149. The cubic root of 1220140353 is about 1068.5707043572.

Adding to 1220140353 its reverse (3530410221), we get a palindrome (4750550574).

The spelling of 1220140353 in words is "one billion, two hundred twenty million, one hundred forty thousand, three hundred fifty-three".