4020122012042 has 4 divisors (see below), whose sum is σ = 6030183018066. Its totient is φ = 2010061006020.

The previous prime is 4020122012029. The next prime is 4020122012047. The reversal of 4020122012042 is 2402102210204.

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., 3883465363801 + 136656648241 = 1970651^2 + 369671^2 .

It is a super-2 number, since 2×4020122012042² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4020122012047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005030503009 + ... + 1005030503012.

Almost surely, 2^{4020122012042} is an apocalyptic number.

4020122012042 is a deficient number, since it is larger than the sum of its proper divisors (2010061006024).

4020122012042 is a wasteful number, since it uses less digits than its factorization.

4020122012042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010061006023.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 4020122012042 its reverse (2402102210204), we get a palindrome (6422224222246).

The spelling of 4020122012042 in words is "four trillion, twenty billion, one hundred twenty-two million, twelve thousand, forty-two".