1242107986 has 16 divisors (see below), whose sum is σ = 2164236480. Its totient is φ = 523604880.

The previous prime is 1242107983. The next prime is 1242108001. The reversal of 1242107986 is 6897012421.

It is not an unprimeable number, because it can be changed into a prime (1242107983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726376 + ... + 728083.

It is an arithmetic number, because the mean of its divisors is an integer number (135264780).

Almost surely, 2^1242107986 is an apocalyptic number.

1242107986 is a deficient number, since it is larger than the sum of its proper divisors (922128494).

1242107986 is a wasteful number, since it uses less digits than its factorization.

1242107986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454529.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1242107986 is about 35243.5524032411. The cubic root of 1242107986 is about 1074.9455133011.

The spelling of 1242107986 in words is "one billion, two hundred forty-two million, one hundred seven thousand, nine hundred eighty-six".