1242870965 has 8 divisors (see below), whose sum is σ = 1704508800. Its totient is φ = 852254352.

The previous prime is 1242870943. The next prime is 1242870989. The reversal of 1242870965 is 5690782421.

It is a happy number.

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 1242870965 - 2¹² = 1242866869 is a prime.

It is a congruent 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, 17755265 + ... + 17755334.

It is an arithmetic number, because the mean of its divisors is an integer number (213063600).

Almost surely, 2^1242870965 is an apocalyptic number.

It is an amenable number.

1242870965 is a deficient number, since it is larger than the sum of its proper divisors (461637835).

1242870965 is an equidigital number, since it uses as much as digits as its factorization.

1242870965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35510611.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1242870965 is about 35254.3751185580. The cubic root of 1242870965 is about 1075.1655674317.

The spelling of 1242870965 in words is "one billion, two hundred forty-two million, eight hundred seventy thousand, nine hundred sixty-five".