421738274243 has 54 divisors (see below), whose sum is σ = 533237017572. Its totient is φ = 333083562240.

The previous prime is 421738274239. The next prime is 421738274327. The reversal of 421738274243 is 342472837124.

It is not a de Polignac number, because 421738274243 - 2² = 421738274239 is a prime.

It is a super-2 number, since 2×421738274243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421738274843) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 5874080 + ... + 5945442.

Almost surely, 2^421738274243 is an apocalyptic number.

421738274243 is a deficient number, since it is larger than the sum of its proper divisors (111498743329).

421738274243 is a wasteful number, since it uses less digits than its factorization.

421738274243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71445 (or 71404 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 47.

The spelling of 421738274243 in words is "four hundred twenty-one billion, seven hundred thirty-eight million, two hundred seventy-four thousand, two hundred forty-three".