1242101147 has 6 divisors (see below), whose sum is σ = 1444893228. Its totient is φ = 1064658084.

The previous prime is 1242101143. The next prime is 1242101153. The reversal of 1242101147 is 7411012421.

It is not a de Polignac number, because 1242101147 - 2² = 1242101143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242101143) 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, 12674453 + ... + 12674550.

It is an arithmetic number, because the mean of its divisors is an integer number (240815538).

Almost surely, 2^1242101147 is an apocalyptic number.

1242101147 is a deficient number, since it is larger than the sum of its proper divisors (202792081).

1242101147 is an equidigital number, since it uses as much as digits as its factorization.

1242101147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25349017 (or 25349010 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1242101147 is about 35243.4553782685. The cubic root of 1242101147 is about 1074.9435404276.

Adding to 1242101147 its reverse (7411012421), we get a palindrome (8653113568).

The spelling of 1242101147 in words is "one billion, two hundred forty-two million, one hundred one thousand, one hundred forty-seven".