421254405545 has 8 divisors (see below), whose sum is σ = 505508788224. Its totient is φ = 337001190064.

The previous prime is 421254405503. The next prime is 421254405613. The reversal of 421254405545 is 545504452124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421254405545 - 2³⁴ = 404074536361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148582 + ... + 1470288.

It is an arithmetic number, because the mean of its divisors is an integer number (63188598528).

Almost surely, 2^421254405545 is an apocalyptic number.

It is an amenable number.

421254405545 is a deficient number, since it is larger than the sum of its proper divisors (84254382679).

421254405545 is a wasteful number, since it uses less digits than its factorization.

421254405545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583599.

The product of its (nonzero) digits is 640000, while the sum is 41.

Adding to 421254405545 its reverse (545504452124), we get a palindrome (966758857669).

The spelling of 421254405545 in words is "four hundred twenty-one billion, two hundred fifty-four million, four hundred five thousand, five hundred forty-five".