1242213347 has 6 divisors (see below), whose sum is σ = 1286526228. Its totient is φ = 1199377592.

The previous prime is 1242213257. The next prime is 1242213353. The reversal of 1242213347 is 7433122421.

It is not a de Polignac number, because 1242213347 - 2¹⁶ = 1242147811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242213547) 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, 737693 + ... + 739374.

It is an arithmetic number, because the mean of its divisors is an integer number (214421038).

Almost surely, 2^1242213347 is an apocalyptic number.

1242213347 is a deficient number, since it is larger than the sum of its proper divisors (44312881).

1242213347 is an equidigital number, since it uses as much as digits as its factorization.

1242213347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477125 (or 1477096 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 1242213347 is about 35245.0471272206. The cubic root of 1242213347 is about 1074.9759062925.

Adding to 1242213347 its reverse (7433122421), we get a palindrome (8675335768).

The spelling of 1242213347 in words is "one billion, two hundred forty-two million, two hundred thirteen thousand, three hundred forty-seven".