421145423055 has 48 divisors (see below), whose sum is σ = 834318750720. Its totient is φ = 192512147904.

The previous prime is 421145423053. The next prime is 421145423057. The reversal of 421145423055 is 550324541124.

421145423055 is a `hidden beast` number, since 4 + 21 + 14 + 542 + 30 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (421145423053) and next prime (421145423057).

It is not a de Polignac number, because 421145423055 - 2¹ = 421145423053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421145423053) 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 47 ways as a sum of consecutive naturals, for example, 7538154 + ... + 7593816.

It is an arithmetic number, because the mean of its divisors is an integer number (17381640640).

Almost surely, 2^421145423055 is an apocalyptic number.

421145423055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421145423055 is a deficient number, since it is larger than the sum of its proper divisors (413173327665).

421145423055 is a wasteful number, since it uses less digits than its factorization.

421145423055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79700 (or 79697 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 421145423055 its reverse (550324541124), we get a palindrome (971469964179).

The spelling of 421145423055 in words is "four hundred twenty-one billion, one hundred forty-five million, four hundred twenty-three thousand, fifty-five".