1242954305 has 8 divisors (see below), whose sum is σ = 1491789312. Its totient is φ = 994200688.

The previous prime is 1242954289. The next prime is 1242954313. The reversal of 1242954305 is 5034592421.

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 1242954305 - 2⁴ = 1242954289 is a prime.

It is a Duffinian 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, 20834 + ... + 54036.

It is an arithmetic number, because the mean of its divisors is an integer number (186473664).

Almost surely, 2^1242954305 is an apocalyptic number.

It is an amenable number.

1242954305 is a deficient number, since it is larger than the sum of its proper divisors (248835007).

1242954305 is an equidigital number, since it uses as much as digits as its factorization.

1242954305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40695.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1242954305 is about 35255.5570797002. The cubic root of 1242954305 is about 1075.1895984315.

The spelling of 1242954305 in words is "one billion, two hundred forty-two million, nine hundred fifty-four thousand, three hundred five".