1220553542 has 8 divisors (see below), whose sum is σ = 1971663456. Its totient is φ = 563332392.

The previous prime is 1220553541. The next prime is 1220553547. The reversal of 1220553542 is 2453550221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220553541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23472158 + ... + 23472209.

It is an arithmetic number, because the mean of its divisors is an integer number (246457932).

Almost surely, 2^1220553542 is an apocalyptic number.

1220553542 is a deficient number, since it is larger than the sum of its proper divisors (751109914).

1220553542 is a wasteful number, since it uses less digits than its factorization.

1220553542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46944382.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1220553542 is about 34936.4214252118. The cubic root of 1220553542 is about 1068.6913112011.

The spelling of 1220553542 in words is "one billion, two hundred twenty million, five hundred fifty-three thousand, five hundred forty-two".