1242776045 has 8 divisors (see below), whose sum is σ = 1704378624. Its totient is φ = 852189264.

The previous prime is 1242776011. The next prime is 1242776053. The reversal of 1242776045 is 5406772421.

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 1242776045 - 2¹⁶ = 1242710509 is a prime.

It is a Duffinian number.

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, 17753909 + ... + 17753978.

It is an arithmetic number, because the mean of its divisors is an integer number (213047328).

Almost surely, 2^1242776045 is an apocalyptic number.

It is an amenable number.

1242776045 is a deficient number, since it is larger than the sum of its proper divisors (461602579).

1242776045 is an equidigital number, since it uses as much as digits as its factorization.

1242776045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35507899.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 1242776045 is about 35253.0288769632. The cubic root of 1242776045 is about 1075.1381960428.

The spelling of 1242776045 in words is "one billion, two hundred forty-two million, seven hundred seventy-six thousand, forty-five".