1220041245 has 8 divisors (see below), whose sum is σ = 1952066016. Its totient is φ = 650688656.

The previous prime is 1220041213. The next prime is 1220041247. The reversal of 1220041245 is 5421400221.

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 1220041245 - 2⁵ = 1220041213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220041247) 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, 40668027 + ... + 40668056.

It is an arithmetic number, because the mean of its divisors is an integer number (244008252).

Almost surely, 2^1220041245 is an apocalyptic number.

1220041245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220041245 is a deficient number, since it is larger than the sum of its proper divisors (732024771).

1220041245 is an equidigital number, since it uses as much as digits as its factorization.

1220041245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81336091.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1220041245 is about 34929.0888086134. The cubic root of 1220041245 is about 1068.5417714090.

Adding to 1220041245 its reverse (5421400221), we get a palindrome (6641441466).

The spelling of 1220041245 in words is "one billion, two hundred twenty million, forty-one thousand, two hundred forty-five".