42121143402 has 16 divisors (see below), whose sum is σ = 90722462880. Its totient is φ = 12960351792.

The previous prime is 42121143371. The next prime is 42121143413. The reversal of 42121143402 is 20434112124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270007252 + ... + 270007407.

It is an arithmetic number, because the mean of its divisors is an integer number (5670153930).

Almost surely, 2^42121143402 is an apocalyptic number.

42121143402 is an abundant number, since it is smaller than the sum of its proper divisors (48601319478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42121143402 is a wasteful number, since it uses less digits than its factorization.

42121143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540014677.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 42121143402 its reverse (20434112124), we get a palindrome (62555255526).

The spelling of 42121143402 in words is "forty-two billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred two".