1242464519 has 4 divisors (see below), whose sum is σ = 1242747744. Its totient is φ = 1242181296.

The previous prime is 1242464501. The next prime is 1242464543. The reversal of 1242464519 is 9154642421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9154642421 = 151 ⋅60626771.

It is a cyclic number.

It is not a de Polignac number, because 1242464519 - 2¹² = 1242460423 is a prime.

It is a super-2 number, since 2×1242464519² = 3087436161947802722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242460519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134927 + ... + 143840.

It is an arithmetic number, because the mean of its divisors is an integer number (310686936).

Almost surely, 2^1242464519 is an apocalyptic number.

1242464519 is a deficient number, since it is larger than the sum of its proper divisors (283225).

1242464519 is an equidigital number, since it uses as much as digits as its factorization.

1242464519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283224.

The product of its digits is 69120, while the sum is 38.

The square root of 1242464519 is about 35248.6101711826. The cubic root of 1242464519 is about 1075.0483537652.

The spelling of 1242464519 in words is "one billion, two hundred forty-two million, four hundred sixty-four thousand, five hundred nineteen".