142405321103 has 12 divisors (see below), whose sum is σ = 148245086520. Its totient is φ = 136745583312.

The previous prime is 142405321073. The next prime is 142405321111. The reversal of 142405321103 is 301123504241.

It is a happy number.

It is not a de Polignac number, because 142405321103 - 2⁶ = 142405321039 is a prime.

It is a super-4 number, since 4×142405321103⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142405321703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491093 + ... + 725246.

It is an arithmetic number, because the mean of its divisors is an integer number (12353757210).

Almost surely, 2^142405321103 is an apocalyptic number.

142405321103 is a deficient number, since it is larger than the sum of its proper divisors (5839765417).

142405321103 is an equidigital number, since it uses as much as digits as its factorization.

142405321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216486 (or 1216439 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 142405321103 its reverse (301123504241), we get a palindrome (443528825344).

The spelling of 142405321103 in words is "one hundred forty-two billion, four hundred five million, three hundred twenty-one thousand, one hundred three".