1242342434 has 8 divisors (see below), whose sum is σ = 1865031168. Its totient is φ = 620665380.

The previous prime is 1242342427. The next prime is 1242342443. The reversal of 1242342434 is 4342432421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1242342397 and 1242342406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249842 + ... + 254765.

It is an arithmetic number, because the mean of its divisors is an integer number (233128896).

Almost surely, 2^1242342434 is an apocalyptic number.

1242342434 is a deficient number, since it is larger than the sum of its proper divisors (622688734).

1242342434 is a wasteful number, since it uses less digits than its factorization.

1242342434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505840.

The product of its digits is 18432, while the sum is 29.

The square root of 1242342434 is about 35246.8783582320. The cubic root of 1242342434 is about 1075.0131410689.

Adding to 1242342434 its reverse (4342432421), we get a palindrome (5584774855).

The spelling of 1242342434 in words is "one billion, two hundred forty-two million, three hundred forty-two thousand, four hundred thirty-four".