1023420043545 has 8 divisors (see below), whose sum is σ = 1637472069696. Its totient is φ = 545824023216.

The previous prime is 1023420043537. The next prime is 1023420043567. The reversal of 1023420043545 is 5453400243201.

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

It is not a de Polignac number, because 1023420043545 - 2³ = 1023420043537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34114001437 + ... + 34114001466.

It is an arithmetic number, because the mean of its divisors is an integer number (204684008712).

Almost surely, 2^{1023420043545} is an apocalyptic number.

1023420043545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023420043545 is a deficient number, since it is larger than the sum of its proper divisors (614052026151).

1023420043545 is an equidigital number, since it uses as much as digits as its factorization.

1023420043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68228002911.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 1023420043545 its reverse (5453400243201), we get a palindrome (6476820286746).

The spelling of 1023420043545 in words is "one trillion, twenty-three billion, four hundred twenty million, forty-three thousand, five hundred forty-five".