1242340342 has 8 divisors (see below), whose sum is σ = 1913875776. Its totient is φ = 604381752.

The previous prime is 1242340273. The next prime is 1242340357. The reversal of 1242340342 is 2430432421.

It is a happy number.

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

It is a congruent number.

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, 8394118 + ... + 8394265.

It is an arithmetic number, because the mean of its divisors is an integer number (239234472).

Almost surely, 2^1242340342 is an apocalyptic number.

1242340342 is a deficient number, since it is larger than the sum of its proper divisors (671535434).

1242340342 is a wasteful number, since it uses less digits than its factorization.

1242340342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16788422.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1242340342 is about 35246.8486818325. The cubic root of 1242340342 is about 1075.0125376580.

Adding to 1242340342 its reverse (2430432421), we get a palindrome (3672772763).

The spelling of 1242340342 in words is "one billion, two hundred forty-two million, three hundred forty thousand, three hundred forty-two".