155242338 has 32 divisors (see below), whose sum is σ = 314563392. Its totient is φ = 51072000.

The previous prime is 155242333. The next prime is 155242357. The reversal of 155242338 is 833242551.

It is a junction number, because it is equal to n+sod(n) for n = 155242299 and 155242308.

It is not an unprimeable number, because it can be changed into a prime (155242333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271593 + ... + 272163.

It is an arithmetic number, because the mean of its divisors is an integer number (9830106).

Almost surely, 2^155242338 is an apocalyptic number.

155242338 is an abundant number, since it is smaller than the sum of its proper divisors (159321054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155242338 is a wasteful number, since it uses less digits than its factorization.

155242338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090.

The product of its digits is 28800, while the sum is 33.

The square root of 155242338 is about 12459.6283251147. The cubic root of 155242338 is about 537.4483388603.

Adding to 155242338 its reverse (833242551), we get a palindrome (988484889).

The spelling of 155242338 in words is "one hundred fifty-five million, two hundred forty-two thousand, three hundred thirty-eight".