42143221134202 has 4 divisors (see below), whose sum is σ = 63214831701306. Its totient is φ = 21071610567100.

The previous prime is 42143221134121. The next prime is 42143221134221. The reversal of 42143221134202 is 20243112234124.

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., 32551372355161 + 9591848779041 = 5705381^2 + 3097071^2 .

It is a super-3 number, since 3×42143221134202³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10535805283549 + ... + 10535805283552.

Almost surely, 2^{42143221134202} is an apocalyptic number.

42143221134202 is a deficient number, since it is larger than the sum of its proper divisors (21071610567104).

42143221134202 is a wasteful number, since it uses less digits than its factorization.

42143221134202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071610567103.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 42143221134202 its reverse (20243112234124), we get a palindrome (62386333368326).

The spelling of 42143221134202 in words is "forty-two trillion, one hundred forty-three billion, two hundred twenty-one million, one hundred thirty-four thousand, two hundred two".