155303242 has 8 divisors (see below), whose sum is σ = 240469632. Its totient is φ = 75146700.

The previous prime is 155303233. The next prime is 155303257. The reversal of 155303242 is 242303551.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252384 + ... + 1252507.

It is an arithmetic number, because the mean of its divisors is an integer number (30058704).

Almost surely, 2^155303242 is an apocalyptic number.

155303242 is a deficient number, since it is larger than the sum of its proper divisors (85166390).

155303242 is a wasteful number, since it uses less digits than its factorization.

155303242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504924.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 155303242 is about 12462.0721390947. The cubic root of 155303242 is about 537.5186128042.

Adding to 155303242 its reverse (242303551), we get a palindrome (397606793).

The spelling of 155303242 in words is "one hundred fifty-five million, three hundred three thousand, two hundred forty-two".