1220054456 has 32 divisors (see below), whose sum is σ = 2340157440. Its totient is φ = 596157408.

The previous prime is 1220054449. The next prime is 1220054461. The reversal of 1220054456 is 6544500221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59111 + ... + 77033.

It is an arithmetic number, because the mean of its divisors is an integer number (73129920).

Almost surely, 2^1220054456 is an apocalyptic number.

It is an amenable number.

1220054456 is a deficient number, since it is larger than the sum of its proper divisors (1120102984).

1220054456 is a wasteful number, since it uses less digits than its factorization.

1220054456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18123 (or 18119 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1220054456 is about 34929.2779198196. The cubic root of 1220054456 is about 1068.5456282334.

Adding to 1220054456 its reverse (6544500221), we get a palindrome (7764554677).

The spelling of 1220054456 in words is "one billion, two hundred twenty million, fifty-four thousand, four hundred fifty-six".