1023420065 has 16 divisors (see below), whose sum is σ = 1284837120. Its totient is φ = 781764480.

The previous prime is 1023420049. The next prime is 1023420091. The reversal of 1023420065 is 5600243201.

It is not a de Polignac number, because 1023420065 - 2⁴ = 1023420049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1023420065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43475 + ... + 62744.

It is an arithmetic number, because the mean of its divisors is an integer number (80302320).

Almost surely, 2^1023420065 is an apocalyptic number.

It is an amenable number.

1023420065 is a deficient number, since it is larger than the sum of its proper divisors (261417055).

1023420065 is a wasteful number, since it uses less digits than its factorization.

1023420065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106312.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1023420065 is about 31990.9372322850. The cubic root of 1023420065 is about 1007.7465247350.

Adding to 1023420065 its reverse (5600243201), we get a palindrome (6623663266).

The spelling of 1023420065 in words is "one billion, twenty-three million, four hundred twenty thousand, sixty-five".