1020403345 has 16 divisors (see below), whose sum is σ = 1325318400. Its totient is φ = 749732544.

The previous prime is 1020403343. The next prime is 1020403357. The reversal of 1020403345 is 5433040201.

1020403345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1020403345 - 2¹ = 1020403343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020403343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26509 + ... + 52378.

It is an arithmetic number, because the mean of its divisors is an integer number (82832400).

Almost surely, 2^1020403345 is an apocalyptic number.

It is an amenable number.

1020403345 is a deficient number, since it is larger than the sum of its proper divisors (304915055).

1020403345 is a wasteful number, since it uses less digits than its factorization.

1020403345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79104.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1020403345 is about 31943.7528321267. The cubic root of 1020403345 is about 1006.7553771192.

Adding to 1020403345 its reverse (5433040201), we get a palindrome (6453443546).

The spelling of 1020403345 in words is "one billion, twenty million, four hundred three thousand, three hundred forty-five".