155104240 has 20 divisors (see below), whose sum is σ = 360617544. Its totient is φ = 62041664.

The previous prime is 155104237. The next prime is 155104247. The reversal of 155104240 is 42401551.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155104247) 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, 969322 + ... + 969481.

Almost surely, 2^155104240 is an apocalyptic number.

155104240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155104240 is an abundant number, since it is smaller than the sum of its proper divisors (205513304).

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

155104240 is a wasteful number, since it uses less digits than its factorization.

155104240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938816 (or 1938810 counting only the distinct ones).

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

The square root of 155104240 is about 12454.0852735157. The cubic root of 155104240 is about 537.2889266782.

Adding to 155104240 its reverse (42401551), we get a palindrome (197505791).

The spelling of 155104240 in words is "one hundred fifty-five million, one hundred four thousand, two hundred forty".