242542136 has 16 divisors (see below), whose sum is σ = 457309800. Its totient is φ = 120592864.

The previous prime is 242542133. The next prime is 242542147. The reversal of 242542136 is 631245242.

242542136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 242542099 and 242542108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242542133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83255 + ... + 86118.

Almost surely, 2^242542136 is an apocalyptic number.

It is an amenable number.

242542136 is a deficient number, since it is larger than the sum of its proper divisors (214767664).

242542136 is a wasteful number, since it uses less digits than its factorization.

242542136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169558 (or 169554 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 242542136 is about 15573.7643490583. The cubic root of 242542136 is about 623.6329681918.

Adding to 242542136 its reverse (631245242), we get a palindrome (873787378).

The spelling of 242542136 in words is "two hundred forty-two million, five hundred forty-two thousand, one hundred thirty-six".