1285340433 has 8 divisors (see below), whose sum is σ = 1845617088. Its totient is φ = 790978704.

The previous prime is 1285340411. The next prime is 1285340461. The reversal of 1285340433 is 3340435821.

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

It is not a de Polignac number, because 1285340433 - 2⁵ = 1285340401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285340394 and 1285340403.

It is not an unprimeable number, because it can be changed into a prime (1285340473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16478685 + ... + 16478762.

It is an arithmetic number, because the mean of its divisors is an integer number (230702136).

Almost surely, 2^1285340433 is an apocalyptic number.

1285340433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1285340433 is a deficient number, since it is larger than the sum of its proper divisors (560276655).

1285340433 is a wasteful number, since it uses less digits than its factorization.

1285340433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32957463.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1285340433 is about 35851.6447739849. The cubic root of 1285340433 is about 1087.2749686849.

The spelling of 1285340433 in words is "one billion, two hundred eighty-five million, three hundred forty thousand, four hundred thirty-three".