142605210122 has 4 divisors (see below), whose sum is σ = 213907815186. Its totient is φ = 71302605060.

The previous prime is 142605210113. The next prime is 142605210133. The reversal of 142605210122 is 221012506241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221012506241 = 67 ⋅3298694123.

It can be written as a sum of positive squares in only one way, i.e., 119556201361 + 23049008761 = 345769^2 + 151819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142605210091 and 142605210100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35651302529 + ... + 35651302532.

Almost surely, 2^142605210122 is an apocalyptic number.

142605210122 is a deficient number, since it is larger than the sum of its proper divisors (71302605064).

142605210122 is an equidigital number, since it uses as much as digits as its factorization.

142605210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71302605063.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 142605210122 its reverse (221012506241), we get a palindrome (363617716363).

The spelling of 142605210122 in words is "one hundred forty-two billion, six hundred five million, two hundred ten thousand, one hundred twenty-two".