1242334189 has 8 divisors (see below), whose sum is σ = 1252200960. Its totient is φ = 1232506800.

The previous prime is 1242334187. The next prime is 1242334271. The reversal of 1242334189 is 9814332421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242334189 - 2¹ = 1242334187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242334183) 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, 55179 + ... + 74359.

It is an arithmetic number, because the mean of its divisors is an integer number (156525120).

Almost surely, 2^1242334189 is an apocalyptic number.

It is an amenable number.

1242334189 is a deficient number, since it is larger than the sum of its proper divisors (9866771).

1242334189 is a wasteful number, since it uses less digits than its factorization.

1242334189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19691.

The product of its digits is 41472, while the sum is 37.

The square root of 1242334189 is about 35246.7613973256. The cubic root of 1242334189 is about 1075.0107628993.

The spelling of 1242334189 in words is "one billion, two hundred forty-two million, three hundred thirty-four thousand, one hundred eighty-nine".