42121142013 has 8 divisors (see below), whose sum is σ = 56169311968. Its totient is φ = 28076866704.

The previous prime is 42121142003. The next prime is 42121142033. The reversal of 42121142013 is 31024112124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42121142013 - 2¹² = 42121137917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121142003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948331 + ... + 991752.

It is an arithmetic number, because the mean of its divisors is an integer number (7021163996).

Almost surely, 2^42121142013 is an apocalyptic number.

It is an amenable number.

42121142013 is a deficient number, since it is larger than the sum of its proper divisors (14048169955).

42121142013 is a wasteful number, since it uses less digits than its factorization.

42121142013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947323.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 42121142013 its reverse (31024112124), we get a palindrome (73145254137).

The spelling of 42121142013 in words is "forty-two billion, one hundred twenty-one million, one hundred forty-two thousand, thirteen".