155411242 has 16 divisors (see below), whose sum is σ = 271857600. Its totient is φ = 66604524.

The previous prime is 155411231. The next prime is 155411303. The reversal of 155411242 is 242114551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112588 + ... + 113959.

It is an arithmetic number, because the mean of its divisors is an integer number (16991100).

Almost surely, 2^155411242 is an apocalyptic number.

155411242 is a deficient number, since it is larger than the sum of its proper divisors (116446358).

155411242 is an equidigital number, since it uses as much as digits as its factorization.

155411242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226570 (or 226556 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 155411242 is about 12466.4045337860. The cubic root of 155411242 is about 537.6431831993.

Adding to 155411242 its reverse (242114551), we get a palindrome (397525793).

The spelling of 155411242 in words is "one hundred fifty-five million, four hundred eleven thousand, two hundred forty-two".