1242514919 has 2 divisors, whose sum is σ = 1242514920. Its totient is φ = 1242514918.

The previous prime is 1242514883. The next prime is 1242514927. The reversal of 1242514919 is 9194152421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242514919 - 2²⁴ = 1225737703 is a prime.

It is a super-2 number, since 2×1242514919² = 3087686647875153122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242534919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621257459 + 621257460.

It is an arithmetic number, because the mean of its divisors is an integer number (621257460).

Almost surely, 2^1242514919 is an apocalyptic number.

1242514919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242514919 is an equidigital number, since it uses as much as digits as its factorization.

1242514919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 1242514919 is about 35249.3250857375. The cubic root of 1242514919 is about 1075.0628898488.

The spelling of 1242514919 in words is "one billion, two hundred forty-two million, five hundred fourteen thousand, nine hundred nineteen".