420068628842 has 4 divisors (see below), whose sum is σ = 630102943266. Its totient is φ = 210034314420.

The previous prime is 420068628841. The next prime is 420068628853. The reversal of 420068628842 is 248826860024.

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., 210113141161 + 209955487681 = 458381^2 + 458209^2 .

It is not an unprimeable number, because it can be changed into a prime (420068628841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105017157209 + ... + 105017157212.

Almost surely, 2^420068628842 is an apocalyptic number.

420068628842 is a deficient number, since it is larger than the sum of its proper divisors (210034314424).

420068628842 is a wasteful number, since it uses less digits than its factorization.

420068628842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210034314423.

The product of its (nonzero) digits is 2359296, while the sum is 50.

The spelling of 420068628842 in words is "four hundred twenty billion, sixty-eight million, six hundred twenty-eight thousand, eight hundred forty-two".