1294428065 has 8 divisors (see below), whose sum is σ = 1775215680. Its totient is φ = 887607792.

The previous prime is 1294428053. The next prime is 1294428101. The reversal of 1294428065 is 5608244921.

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

It is a cyclic number.

It is not a de Polignac number, because 1294428065 - 2⁶ = 1294428001 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18491795 + ... + 18491864.

It is an arithmetic number, because the mean of its divisors is an integer number (221901960).

Almost surely, 2^1294428065 is an apocalyptic number.

It is an amenable number.

1294428065 is a deficient number, since it is larger than the sum of its proper divisors (480787615).

1294428065 is an equidigital number, since it uses as much as digits as its factorization.

1294428065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36983671.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1294428065 is about 35978.1609452179. The cubic root of 1294428065 is about 1089.8313755927.

The spelling of 1294428065 in words is "one billion, two hundred ninety-four million, four hundred twenty-eight thousand, sixty-five".