23212142042 has 4 divisors (see below), whose sum is σ = 34818213066. Its totient is φ = 11606071020.

The previous prime is 23212142021. The next prime is 23212142069. The reversal of 23212142042 is 24024121232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22671626041 + 540516001 = 150571^2 + 23249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23212141999 and 23212142017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5803035509 + ... + 5803035512.

Almost surely, 2^23212142042 is an apocalyptic number.

23212142042 is a deficient number, since it is larger than the sum of its proper divisors (11606071024).

23212142042 is a wasteful number, since it uses less digits than its factorization.

23212142042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606071023.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 23212142042 its reverse (24024121232), we get a palindrome (47236263274).

The spelling of 23212142042 in words is "twenty-three billion, two hundred twelve million, one hundred forty-two thousand, forty-two".