421001420339973 has 32 divisors (see below), whose sum is σ = 614591855660160. Its totient is φ = 254224858383360.

The previous prime is 421001420339939. The next prime is 421001420340091. The reversal of 421001420339973 is 379933024100124.

It is a happy number.

It is not a de Polignac number, because 421001420339973 - 2²⁴ = 421001403562757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421001420339933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376572073 + ... + 377688401.

It is an arithmetic number, because the mean of its divisors is an integer number (19205995489380).

Almost surely, 2^{421001420339973} is an apocalyptic number.

It is an amenable number.

421001420339973 is a deficient number, since it is larger than the sum of its proper divisors (193590435320187).

421001420339973 is a wasteful number, since it uses less digits than its factorization.

421001420339973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157877.

The product of its (nonzero) digits is 979776, while the sum is 48.

The spelling of 421001420339973 in words is "four hundred twenty-one trillion, one billion, four hundred twenty million, three hundred thirty-nine thousand, nine hundred seventy-three".