1023405145 has 16 divisors (see below), whose sum is σ = 1408026240. Its totient is φ = 699513984.

The previous prime is 1023405133. The next prime is 1023405161. The reversal of 1023405145 is 5415043201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1023405145 - 2⁷ = 1023405017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35755 + ... + 57664.

It is an arithmetic number, because the mean of its divisors is an integer number (88001640).

Almost surely, 2^1023405145 is an apocalyptic number.

It is an amenable number.

1023405145 is a deficient number, since it is larger than the sum of its proper divisors (384621095).

1023405145 is an equidigital number, since it uses as much as digits as its factorization.

1023405145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93744.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1023405145 is about 31990.7040403927. The cubic root of 1023405145 is about 1007.7416275438.

Adding to 1023405145 its reverse (5415043201), we get a palindrome (6438448346).

The spelling of 1023405145 in words is "one billion, twenty-three million, four hundred five thousand, one hundred forty-five".