55430320242 has 16 divisors (see below), whose sum is σ = 120938880672. Its totient is φ = 16797066720.

The previous prime is 55430320219. The next prime is 55430320249. The reversal of 55430320242 is 24202303455.

It is not an unprimeable number, because it can be changed into a prime (55430320249) 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, 419926603 + ... + 419926734.

It is an arithmetic number, because the mean of its divisors is an integer number (7558680042).

Almost surely, 2^55430320242 is an apocalyptic number.

55430320242 is an abundant number, since it is smaller than the sum of its proper divisors (65508560430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55430320242 is a wasteful number, since it uses less digits than its factorization.

55430320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839853353.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 55430320242 its reverse (24202303455), we get a palindrome (79632623697).

The spelling of 55430320242 in words is "fifty-five billion, four hundred thirty million, three hundred twenty thousand, two hundred forty-two".