1242340151 has 8 divisors (see below), whose sum is σ = 1342845504. Its totient is φ = 1142540640.

The previous prime is 1242340123. The next prime is 1242340181. The reversal of 1242340151 is 1510432421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242340151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242340111) 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, 172796 + ... + 179841.

It is an arithmetic number, because the mean of its divisors is an integer number (167855688).

Almost surely, 2^1242340151 is an apocalyptic number.

1242340151 is a deficient number, since it is larger than the sum of its proper divisors (100505353).

1242340151 is a wasteful number, since it uses less digits than its factorization.

1242340151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352921.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1242340151 is about 35246.8459723704. The cubic root of 1242340151 is about 1075.0124825664.

Adding to 1242340151 its reverse (1510432421), we get a palindrome (2752772572).

The spelling of 1242340151 in words is "one billion, two hundred forty-two million, three hundred forty thousand, one hundred fifty-one".