421543127001 has 16 divisors (see below), whose sum is σ = 568044719424. Its totient is φ = 278037110784.

The previous prime is 421543126987. The next prime is 421543127053. The reversal of 421543127001 is 100721345124.

It is a de Polignac number, because none of the positive numbers 2^k-421543127001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421543127001.

It is not an unprimeable number, because it can be changed into a prime (421543127501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617785 + ... + 1106681.

It is an arithmetic number, because the mean of its divisors is an integer number (35502794964).

Almost surely, 2^421543127001 is an apocalyptic number.

It is an amenable number.

421543127001 is a deficient number, since it is larger than the sum of its proper divisors (146501592423).

421543127001 is a wasteful number, since it uses less digits than its factorization.

421543127001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491960.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 421543127001 in words is "four hundred twenty-one billion, five hundred forty-three million, one hundred twenty-seven thousand, one".