1242906854 has 12 divisors (see below), whose sum is σ = 2168745804. Its totient is φ = 532674324.

The previous prime is 1242906829. The next prime is 1242906859. The reversal of 1242906854 is 4586092421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242906859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6341264 + ... + 6341459.

It is an arithmetic number, because the mean of its divisors is an integer number (180728817).

Almost surely, 2^1242906854 is an apocalyptic number.

1242906854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1242906854 is a deficient number, since it is larger than the sum of its proper divisors (925838950).

1242906854 is a wasteful number, since it uses less digits than its factorization.

1242906854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12682739 (or 12682732 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1242906854 is about 35254.8841155378. The cubic root of 1242906854 is about 1075.1759161182.

The spelling of 1242906854 in words is "one billion, two hundred forty-two million, nine hundred six thousand, eight hundred fifty-four".