421042542141 has 24 divisors (see below), whose sum is σ = 613914585696. Its totient is φ = 256537694400.

The previous prime is 421042542139. The next prime is 421042542163. The reversal of 421042542141 is 141245240124.

It is not a de Polignac number, because 421042542141 - 2¹ = 421042542139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421042542099 and 421042542108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042542541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4059975 + ... + 4162388.

It is an arithmetic number, because the mean of its divisors is an integer number (25579774404).

Almost surely, 2^421042542141 is an apocalyptic number.

It is an amenable number.

421042542141 is a deficient number, since it is larger than the sum of its proper divisors (192872043555).

421042542141 is a wasteful number, since it uses less digits than its factorization.

421042542141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8222493 (or 8222480 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 421042542141 its reverse (141245240124), we get a palindrome (562287782265).

The spelling of 421042542141 in words is "four hundred twenty-one billion, forty-two million, five hundred forty-two thousand, one hundred forty-one".