1242875507 has 2 divisors, whose sum is σ = 1242875508. Its totient is φ = 1242875506.

The previous prime is 1242875437. The next prime is 1242875509. The reversal of 1242875507 is 7055782421.

It is a strong prime.

It is an emirp because it is prime and its reverse (7055782421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242875507 - 2²² = 1238681203 is a prime.

Together with 1242875509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1242875509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621437753 + 621437754.

It is an arithmetic number, because the mean of its divisors is an integer number (621437754).

Almost surely, 2^1242875507 is an apocalyptic number.

1242875507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242875507 is an equidigital number, since it uses as much as digits as its factorization.

1242875507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 1242875507 is about 35254.4395360357. The cubic root of 1242875507 is about 1075.1668771403.

The spelling of 1242875507 in words is "one billion, two hundred forty-two million, eight hundred seventy-five thousand, five hundred seven".