155201242 has 8 divisors (see below), whose sum is σ = 266059296. Its totient is φ = 66514812.

The previous prime is 155201237. The next prime is 155201257. The reversal of 155201242 is 242102551.

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

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, 5542888 + ... + 5542915.

It is an arithmetic number, because the mean of its divisors is an integer number (33257412).

Almost surely, 2^155201242 is an apocalyptic number.

155201242 is a deficient number, since it is larger than the sum of its proper divisors (110858054).

155201242 is a wasteful number, since it uses less digits than its factorization.

155201242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085812.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 155201242 is about 12457.9790495891. The cubic root of 155201242 is about 537.4009099470.

Adding to 155201242 its reverse (242102551), we get a palindrome (397303793).

The spelling of 155201242 in words is "one hundred fifty-five million, two hundred one thousand, two hundred forty-two".