1242260619 has 8 divisors (see below), whose sum is σ = 1691589120. Its totient is φ = 810552936.

The previous prime is 1242260611. The next prime is 1242260623. The reversal of 1242260619 is 9160622421.

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

It is not a de Polignac number, because 1242260619 - 2³ = 1242260611 is a prime.

It is a super-2 number, since 2×1242260619² = 3086422891036526322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242260619.

It is not an unprimeable number, because it can be changed into a prime (1242260611) 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 7 ways as a sum of consecutive naturals, for example, 4405039 + ... + 4405320.

It is an arithmetic number, because the mean of its divisors is an integer number (211448640).

Almost surely, 2^1242260619 is an apocalyptic number.

1242260619 is a deficient number, since it is larger than the sum of its proper divisors (449328501).

1242260619 is an equidigital number, since it uses as much as digits as its factorization.

1242260619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810409.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1242260619 is about 35245.7177398900. The cubic root of 1242260619 is about 1074.9895420652.

The spelling of 1242260619 in words is "one billion, two hundred forty-two million, two hundred sixty thousand, six hundred nineteen".