1023420500145 has 24 divisors (see below), whose sum is σ = 1787896820736. Its totient is φ = 541526434848.

The previous prime is 1023420500119. The next prime is 1023420500149. The reversal of 1023420500145 is 5410050243201.

1023420500145 is a `hidden beast` number, since 10 + 2 + 3 + 4 + 2 + 0 + 500 + 145 = 666.

It is not a de Polignac number, because 1023420500145 - 2²⁸ = 1023152064689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1023420500149) 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 23 ways as a sum of consecutive naturals, for example, 89532387 + ... + 89543816.

It is an arithmetic number, because the mean of its divisors is an integer number (74495700864).

Almost surely, 2^{1023420500145} is an apocalyptic number.

1023420500145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023420500145 is a deficient number, since it is larger than the sum of its proper divisors (764476320591).

1023420500145 is a wasteful number, since it uses less digits than its factorization.

1023420500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179076341 (or 179076338 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 1023420500145 its reverse (5410050243201), we get a palindrome (6433470743346).

The spelling of 1023420500145 in words is "one trillion, twenty-three billion, four hundred twenty million, five hundred thousand, one hundred forty-five".