1220545041 has 8 divisors (see below), whose sum is σ = 1642603104. Its totient is φ = 806091840.

The previous prime is 1220545019. The next prime is 1220545043. The reversal of 1220545041 is 1405450221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1220545041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220545043) 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, 1900840 + ... + 1901481.

It is an arithmetic number, because the mean of its divisors is an integer number (205325388).

Almost surely, 2^1220545041 is an apocalyptic number.

It is an amenable number.

1220545041 is a deficient number, since it is larger than the sum of its proper divisors (422058063).

1220545041 is a wasteful number, since it uses less digits than its factorization.

1220545041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802431.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1220545041 is about 34936.2997611367. The cubic root of 1220545041 is about 1068.6888300957.

Adding to 1220545041 its reverse (1405450221), we get a palindrome (2625995262).

The spelling of 1220545041 in words is "one billion, two hundred twenty million, five hundred forty-five thousand, forty-one".