42121234021010 has 16 divisors (see below), whose sum is σ = 75818535442776. Its totient is φ = 16848423785088.

The previous prime is 42121234021001. The next prime is 42121234021021. The reversal of 42121234021010 is 1012043212124.

42121234021010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 36221295038569 + 5899938982441 = 6018413^2 + 2428979^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6158219 + ... + 11052878.

Almost surely, 2^{42121234021010} is an apocalyptic number.

42121234021010 is a deficient number, since it is larger than the sum of its proper divisors (33697301421766).

42121234021010 is a wasteful number, since it uses less digits than its factorization.

42121234021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17455837.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 42121234021010 its reverse (1012043212124), we get a palindrome (43133277233134).

The spelling of 42121234021010 in words is "forty-two trillion, one hundred twenty-one billion, two hundred thirty-four million, twenty-one thousand, ten".