42112300021 has 32 divisors (see below), whose sum is σ = 47821003776. Its totient is φ = 36739008000.

The previous prime is 42112300007. The next prime is 42112300037. The reversal of 42112300021 is 12000321124.

It is a cyclic number.

It is not a de Polignac number, because 42112300021 - 2¹¹ = 42112297973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42112299968 and 42112300004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42112300121) 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, 28205751 + ... + 28207243.

It is an arithmetic number, because the mean of its divisors is an integer number (1494406368).

Almost surely, 2^42112300021 is an apocalyptic number.

It is an amenable number.

42112300021 is a deficient number, since it is larger than the sum of its proper divisors (5708703755).

42112300021 is a wasteful number, since it uses less digits than its factorization.

42112300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 42112300021 its reverse (12000321124), we get a palindrome (54112621145).

The spelling of 42112300021 in words is "forty-two billion, one hundred twelve million, three hundred thousand, twenty-one".