1242470499 has 4 divisors (see below), whose sum is σ = 1656627336. Its totient is φ = 828313664.

The previous prime is 1242470491. The next prime is 1242470501. The reversal of 1242470499 is 9940742421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242470499 - 2³ = 1242470491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242470499.

It is not an unprimeable number, because it can be changed into a prime (1242470491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207078414 + ... + 207078419.

It is an arithmetic number, because the mean of its divisors is an integer number (414156834).

Almost surely, 2^1242470499 is an apocalyptic number.

1242470499 is a deficient number, since it is larger than the sum of its proper divisors (414156837).

1242470499 is an equidigital number, since it uses as much as digits as its factorization.

1242470499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414156836.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1242470499 is about 35248.6949971201. The cubic root of 1242470499 is about 1075.0500785036.

The spelling of 1242470499 in words is "one billion, two hundred forty-two million, four hundred seventy thousand, four hundred ninety-nine".