1220554350542 has 8 divisors (see below), whose sum is σ = 1847033575056. Its totient is φ = 604876492192.

The previous prime is 1220554350541. The next prime is 1220554350581. The reversal of 1220554350542 is 2450534550221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220554350496 and 1220554350505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220554350541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2700341258 + ... + 2700341709.

It is an arithmetic number, because the mean of its divisors is an integer number (230879196882).

Almost surely, 2^{1220554350542} is an apocalyptic number.

1220554350542 is a deficient number, since it is larger than the sum of its proper divisors (626479224514).

1220554350542 is a wasteful number, since it uses less digits than its factorization.

1220554350542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400683082.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 1220554350542 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, three hundred fifty thousand, five hundred forty-two".