1242946567 has 2 divisors, whose sum is σ = 1242946568. Its totient is φ = 1242946566.

The previous prime is 1242946559. The next prime is 1242946577. The reversal of 1242946567 is 7656492421.

It is a weak prime.

It is an emirp because it is prime and its reverse (7656492421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242946567 - 2³ = 1242946559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242946577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621473283 + 621473284.

It is an arithmetic number, because the mean of its divisors is an integer number (621473284).

Almost surely, 2^1242946567 is an apocalyptic number.

1242946567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242946567 is an equidigital number, since it uses as much as digits as its factorization.

1242946567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 1242946567 is about 35255.4473379647. The cubic root of 1242946567 is about 1075.1873672327.

It can be divided in two parts, 12429 and 46567, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 1242946567 in words is "one billion, two hundred forty-two million, nine hundred forty-six thousand, five hundred sixty-seven".