421950939701 has 4 divisors (see below), whose sum is σ = 422059665804. Its totient is φ = 421842213600.

The previous prime is 421950939689. The next prime is 421950939733. The reversal of 421950939701 is 107939059124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 267262116676 + 154688823025 = 516974^2 + 393305^2 .

It is a cyclic number.

It is not a de Polignac number, because 421950939701 - 2⁶ = 421950939637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421950939701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421950939001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54357230 + ... + 54364991.

It is an arithmetic number, because the mean of its divisors is an integer number (105514916451).

Almost surely, 2^421950939701 is an apocalyptic number.

It is an amenable number.

421950939701 is a deficient number, since it is larger than the sum of its proper divisors (108726103).

421950939701 is a wasteful number, since it uses less digits than its factorization.

421950939701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108726102.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 421950939701 in words is "four hundred twenty-one billion, nine hundred fifty million, nine hundred thirty-nine thousand, seven hundred one".