142121404243 has 32 divisors (see below), whose sum is σ = 177235036160. Its totient is φ = 110960254080.

The previous prime is 142121404241. The next prime is 142121404259. The reversal of 142121404243 is 342404121241.

It is not a de Polignac number, because 142121404243 - 2¹ = 142121404241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142121404241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15315121 + ... + 15324397.

It is an arithmetic number, because the mean of its divisors is an integer number (5538594880).

Almost surely, 2^142121404243 is an apocalyptic number.

142121404243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142121404243 is a deficient number, since it is larger than the sum of its proper divisors (35113631917).

142121404243 is a wasteful number, since it uses less digits than its factorization.

142121404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11507.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 142121404243 its reverse (342404121241), we get a palindrome (484525525484).

The spelling of 142121404243 in words is "one hundred forty-two billion, one hundred twenty-one million, four hundred four thousand, two hundred forty-three".