1420103565 has 12 divisors (see below), whose sum is σ = 2461512924. Its totient is φ = 757388544.

The previous prime is 1420103561. The next prime is 1420103599. The reversal of 1420103565 is 5653010241.

It can be written as a sum of positive squares in 2 ways, for example, as 799645284 + 620458281 = 28278^2 + 24909^2 .

It is not a de Polignac number, because 1420103565 - 2² = 1420103561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420103561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15778884 + ... + 15778973.

It is an arithmetic number, because the mean of its divisors is an integer number (205126077).

Almost surely, 2^1420103565 is an apocalyptic number.

1420103565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420103565 is a deficient number, since it is larger than the sum of its proper divisors (1041409359).

1420103565 is a wasteful number, since it uses less digits than its factorization.

1420103565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31557868 (or 31557865 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1420103565 is about 37684.2615026486. The cubic root of 1420103565 is about 1124.0181893288.

The spelling of 1420103565 in words is "one billion, four hundred twenty million, one hundred three thousand, five hundred sixty-five".